AEE CMVP study materials
AEE CMVP study resources

AEE CMVP practice questions

One question at a time. Build your AEE CMVP understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Basis for Adjustment

Under the cost approach, the value indication is derived from which of the following?

  1. The price paid in the most recent arm's-length transaction for the subject
  2. The adjusted sale prices of comparable properties
  3. The current cost to reproduce or replace the improvements less accrued depreciation, plus land value Correct answer.
  4. The present worth of anticipated income attributable to the property

Explanation

The cost approach estimates value as the current cost of the improvements new, minus accrued depreciation, plus the contributory value of the site. It is most reliable for new or special-purpose property where depreciation is minimal.

Question 2Basis for Adjustment

Which approach to value is generally given the greatest weight when appraising an owner-occupied single-family residence in an active market?

  1. The income approach
  2. The sales comparison approach Correct answer.
  3. The cost approach
  4. The gross rent multiplier method

Explanation

For residential property bought by owner-occupants, buyers are most influenced by prices of similar homes, so the sales comparison approach typically carries the most weight. The cost and income approaches serve as secondary support.

Question 3Basis for Adjustment

An appraiser must reconcile multiple value indications into a single opinion of value primarily because the indications:

  1. Are required by law to be averaged arithmetically
  2. Reflect different data and different assumptions about the market Correct answer.
  3. Must each be supported by at least three comparables
  4. Always differ by more than ten percent

Explanation

Each approach draws on different evidence and assumptions, so the appraiser weighs their relevance and reliability for the subject. Reconciliation is a reasoned judgment, not a mechanical averaging of the indications.

Question 4Basis for Adjustment

In the sales comparison approach, an adjustment is warranted when a comparable differs from the subject in a characteristic that:

  1. Buyers and sellers in the market recognize and price Correct answer.
  2. Is shared identically by all comparables
  3. The appraiser personally finds unappealing
  4. Appears only in the assessor's records

Explanation

Adjustments are market-derived and are made only for differences that participants actually reflect in price. Personal preferences of the appraiser are irrelevant to market value.

Question 5Basis for Adjustment

When the subject is superior to a comparable sale, the comparable's price is adjusted in which direction?

  1. Upward only if the difference is physical rather than locational
  2. Upward, because the comparable would have sold for more if it were like the subject Correct answer.
  3. Downward, because the comparable's inferior features must be removed
  4. No adjustment, because the subject is the benchmark

Explanation

Adjustments are made to the comparable to make it equivalent to the subject. If the subject is better, the comparable must be adjusted upward to reflect what it would have brought with the subject's superior features.

Question 6Basis for Adjustment

Which pair correctly matches an approach with a typical situation in which it is most reliable?

  1. Cost approach - a forty-year-old custom home in a mature neighborhood
  2. Income approach - a vacant parcel held for future development
  3. Cost approach - a regional shopping mall leased to national tenants
  4. Sales comparison approach - a condominium in a project with many recent resales Correct answer.

Explanation

The sales comparison approach is strongest where numerous similar properties have recently sold, as with condominiums in an active project. The cost approach suits new or special-purpose property, and the income approach suits income-producing property.

Question 7Basis for Adjustment

Accrued depreciation in the cost approach is best described as:

  1. The annual decline in a neighborhood's average sale price
  2. A tax deduction taken against the property's income
  3. The difference between reproduction cost new and the property's contributory value Correct answer.
  4. The amount a buyer finances through a mortgage

Explanation

Accrued depreciation measures total loss in value from all causes as of the effective date, equal to cost new minus the value the improvements actually contribute. It is not a tax or financing concept.

Question 8Basis for Adjustment

An appraiser values a duplex using the income approach and also completes the sales comparison approach. The two indications differ by three percent. The most appropriate action is to:

  1. Discard the lower indication as unreliable
  2. Order a new appraisal from another firm
  3. Weigh the indications by their relevance and reliability and reconcile to a final opinion Correct answer.
  4. Average the two indications and report that figure

Explanation

Reconciliation requires the appraiser to judge which indication best reflects the subject's market and to weight accordingly. A small spread is normal and calls for reasoned judgment, not mechanical averaging or dismissal.

Question 9Basis for Adjustment

A comparable sale closed eight months ago in a market where prices have risen about one percent per month. The comparable sold for $300,000. What is the market conditions adjustment to the comparable?

  1. $24,000 downward
  2. No adjustment is warranted
  3. $8,000 upward
  4. $24,000 upward Correct answer.

Explanation

Eight months at one percent per month is an eight percent increase, or $24,000 on $300,000. Because the market has risen since the sale, the comparable must be adjusted upward to reflect current prices.

Question 10Basis for Adjustment

In paired sales analysis, an appraiser uses two otherwise similar sales that differ only in one feature to:

  1. Compute the site's highest and best use
  2. Estimate the value of that single feature Correct answer.
  3. Prove which of the two properties is superior overall
  4. Determine the property's remaining economic life

Explanation

Paired sales analysis isolates one difference between two sales and treats the price difference as the market's contribution for that feature. It is a common technique for deriving adjustments and for measuring depreciation.

Question 11Basis for Adjustment

Which cause of depreciation is classified as functional obsolescence?

  1. Decline in demand because a major employer closed
  2. A floor plan with bedrooms accessible only through another bedroom Correct answer.
  3. Cracked foundation caused by soil settlement
  4. Loss of value from a neighboring salvage yard

Explanation

Functional obsolescence arises from defects in design, layout, or utility within the property itself, such as an awkward floor plan. Physical deterioration, economic obsolescence, and locational influences are separate categories.

Question 12Basis for Adjustment

An appraiser using the cost approach estimates that a building would cost $500,000 to construct new, that accrued depreciation is $120,000, and that the site value is $150,000. What is the value indicated by the cost approach?

  1. $620,000
  2. $650,000
  3. $530,000 Correct answer.
  4. $470,000

Explanation

The cost approach adds depreciated improvement value to site value: $500,000 minus $120,000 equals $380,000, plus $150,000 equals $530,000. Site value is added after depreciation is deducted from the improvements.

Question 13Basis for Adjustment

A comparable sale required a $15,000 upward adjustment for its inferior condition and a $10,000 downward adjustment for its superior location. The comparable sold for $250,000. What is the adjusted sale price?

  1. $275,000
  2. $245,000
  3. $255,000 Correct answer.
  4. $225,000

Explanation

Net adjustments are applied to the sale price: a $15,000 upward adjustment less a $10,000 downward adjustment yields a net $5,000 increase. Adding that to $250,000 gives $255,000.

Question 14Basis for Adjustment

Which statement best describes the role of the effective date in selecting a basis for adjustment?

  1. It is the date the comparable sale was recorded in public records
  2. It determines which tax rate applies to the property
  3. It fixes the point in time to which all value indications and adjustments must be referenced Correct answer.
  4. It is the date the appraiser's license expires

Explanation

The effective date is the date of the value opinion, so market conditions and other adjustments must bring comparables to that point in time. Recording dates of sales are facts used to measure time, not the effective date itself.

Question 15Basis for Adjustment

Gross adjustments in the sales comparison approach are computed by:

  1. Averaging all adjusted prices of the comparables
  2. Adding the absolute values of all adjustments made to a comparable Correct answer.
  3. Netting upward and downward adjustments to a comparable
  4. Summing only the upward adjustments to a comparable

Explanation

Gross adjustment measures total adjustment activity regardless of direction, so absolute values are summed. Net adjustment, by contrast, offsets upward against downward changes.

Question 16Basis for Adjustment

An appraiser is valuing a special-purpose building with no comparable sales and no income. Which basis for the value opinion is most defensible?

  1. The gross income multiplier method, using apartment data
  2. The income approach, using a hypothetical market rent
  3. The sales comparison approach, using industrial warehouses as surrogates
  4. The cost approach, supported by any available land sales Correct answer.

Explanation

Special-purpose property with no comparable sales or income is the classic setting for the cost approach, since cost new and depreciation can be estimated and land value supported by land sales. The other approaches depend on evidence the market does not supply here.

Question 17Basis for Adjustment

In the income approach, the capitalization rate used to convert net operating income into value is derived primarily from:

  1. The subject's original construction cost
  2. Market evidence of the relationship between income and price Correct answer.
  3. The property's assessed value divided by its tax rate
  4. The appraiser's required rate of return on personal investments

Explanation

Capitalization rates are extracted from market data showing how buyers price income streams, often through comparable sales or band-of-investment techniques. They are market-derived, not based on cost or personal preferences.

Question 18Basis for Adjustment

An appraiser adjusts a comparable for a difference in garage capacity. The best support for the adjustment amount would come from:

  1. The assessor's depreciation schedule for garages
  2. A contractor's bid for a custom garage
  3. The appraiser's estimate of construction cost for a garage
  4. Paired sales of homes differing only in garage capacity Correct answer.

Explanation

Adjustments should reflect how market participants price a feature, which paired sales can demonstrate directly. Cost evidence may inform but does not establish market reaction.

Question 19Basis for Adjustment

Which situation most clearly calls for a location adjustment between the subject and a comparable?

  1. The comparable sold with a refrigerator included
  2. The comparable has a newer roof than the subject
  3. The comparable has one more bathroom than the subject
  4. The comparable backs to a busy arterial while the subject is on a quiet interior street Correct answer.

Explanation

Location adjustments address differences in the desirability of a property's site and surroundings, such as exposure to traffic noise. Roof age, included appliances, and bathroom count are physical or feature differences.

Question 20Basis for Adjustment

An appraiser's reconciliation concludes that the income approach deserves the greatest weight for an apartment building, but the sales comparison indication is $20,000 higher. The appraiser should:

  1. Report a value at the midpoint of the two indications
  2. Report the value supported by the income approach and explain the weighting Correct answer.
  3. Report the lower indication without explanation
  4. Report the higher indication to protect the client

Explanation

Reconciliation requires the appraiser to select and support the most credible indication rather than choosing by outcome. The report should explain why the income approach was given greatest weight.

Question 21Basis for Adjustment

A comparable sold two years ago for $400,000 when the market index stood at 150; the index at the effective date is 165. Using the index, what is the indicated market conditions adjustment?

  1. $40,000 upward Correct answer.
  2. $15,000 upward
  3. $40,000 downward
  4. $60,000 upward

Explanation

The index rose from 150 to 165, a ten percent increase, so the comparable is adjusted upward by $40,000. The adjustment reflects the change in market conditions between the sale date and the effective date.

Question 22Basis for Adjustment

An appraiser estimates depreciation by comparing the subject's actual age to its effective age. Effective age is best described as:

  1. The number of years since the certificate of occupancy was issued
  2. The chronological age adjusted for the site's frontage
  3. The age indicated by the improvements' condition and utility relative to new construction Correct answer.
  4. The remaining economic life divided by the total economic life

Explanation

Effective age reflects how old the improvements appear in terms of condition and utility, which can be greater or less than actual age. It is used with total economic life to estimate depreciation.

Question 23Basis for Adjustment

A property suffers economic obsolescence from an oversupply of similar units in its submarket. In the cost approach, this loss is best handled by:

  1. Adding a market conditions adjustment to the land sale
  2. Increasing the capitalization rate applied to the site value
  3. Deducting the loss from the depreciated cost of the improvements as incurable external obsolescence Correct answer.
  4. Reducing the site value by the full amount of the loss

Explanation

Economic obsolescence is caused by forces outside the property and is generally treated as incurable, deducted from the improvements' depreciated cost. It is not applied to the land or handled through capitalization of site value.

Question 24Basis for Adjustment

Two comparables are otherwise similar, but one required a $60,000 adjustment on a $300,000 price while the other required $12,000 on $310,000. In weighing the comparables, the appraiser should generally:

  1. Give more weight to the comparable with the larger gross adjustment
  2. Give more weight to the comparable with the smaller gross adjustment relative to price Correct answer.
  3. Average the two adjusted prices without regard to adjustment size
  4. Discard both comparables because adjustments were required

Explanation

A comparable needing smaller adjustments is closer to the subject and typically deserves more weight because less of its price rests on the appraiser's estimates. Large adjustments introduce greater uncertainty.

Question 25Basis for Adjustment

An appraiser values a proposed new office building for which no income history exists and construction has not begun. Which basis best supports the value opinion?

  1. The gross rent multiplier method applied to the subject's projected rent
  2. The cost approach, since the improvements are new and depreciation is minimal Correct answer.
  3. The sales comparison approach applied to the vacant land alone
  4. The income approach using the subject's historical operating statements

Explanation

For proposed new construction, cost new is directly measurable and accrued depreciation is negligible, making the cost approach well supported. Historical income does not exist, and land-only evidence ignores the improvements.

Question 26Fundamental Performance Verification Approaches

Which measurement activity establishes the baseline energy use of a facility before any efficiency measures are installed?

  1. Measurement and verification planning
  2. Retrocommissioning study
  3. Baseline energy modeling Correct answer.
  4. Investment-grade audit

Explanation

A baseline model characterizes pre-installation energy consumption as a function of relevant independent variables so that later savings can be isolated. It is the reference against which post-installation consumption is compared.

Question 27Fundamental Performance Verification Approaches

In the IPMVP framework, which option determines savings by measuring the performance of the installed equipment or system separately from the rest of the facility?

  1. Option A
  2. Option C Correct answer.
  3. Option D
  4. Option B

Explanation

Option C isolates the retrofit and measures its energy use directly with dedicated metering, while the rest of the facility is handled separately. Options A and B assess the whole facility, and Option D uses calibrated simulation.

Question 28Fundamental Performance Verification Approaches

What is the primary purpose of adjusting baseline energy data using independent variables such as outdoor temperature or production volume?

  1. To increase the measured savings by selecting favorable periods
  2. To remove the influence of changing conditions on the savings calculation Correct answer.
  3. To convert all energy units into a single fuel type
  4. To eliminate the need for any post-installation measurement

Explanation

Routine adjustments normalize baseline and reporting-period consumption to a common set of conditions so that savings reflect the measure and not weather or activity changes. Without adjustment, savings estimates would be confounded by unrelated variation.

Question 29Fundamental Performance Verification Approaches

Which quantity is defined as the difference between the adjusted baseline energy use and the actual reporting-period energy use?

  1. Avoided energy use
  2. Demand reduction
  3. Energy intensity
  4. Verified savings Correct answer.

Explanation

Verified savings equal the adjusted baseline minus the actual reporting-period consumption, after accounting for any non-routine adjustments. This is the core savings identity used in M&V.

Question 30Fundamental Performance Verification Approaches

A verification approach that relies on engineering calculations and stipulated values rather than measured data is best described as which type of approach?

  1. Calibrated
  2. Stipulated or deemed Correct answer.
  3. Retrospective
  4. Continuous

Explanation

Stipulated (deemed) approaches assign fixed values to savings or parameters based on engineering estimates or tables rather than measurement. They are lower cost but carry more uncertainty about actual performance.

Question 31Fundamental Performance Verification Approaches

Which of the following is an example of a non-routine adjustment in a savings verification analysis?

  1. Adjusting for the addition of a large new process load in the facility Correct answer.
  2. Normalizing data for a change in the number of operating days
  3. Correcting baseline consumption for a change in outdoor temperature
  4. Applying the model's weather coefficients to reporting-period conditions

Explanation

Non-routine adjustments account for changes in the facility or its operating context that are not captured by the routine independent variables, such as a new load or a major occupancy change. Weather and operating-day normalization are routine adjustments.

Question 32Fundamental Performance Verification Approaches

Why should measurement boundaries be documented in an M&V plan?

  1. To specify the warranty terms of the installed equipment
  2. To satisfy utility billing requirements only
  3. To define which energy flows and equipment are included in the savings determination Correct answer.
  4. To determine the contractor's payment schedule

Explanation

The measurement boundary establishes what is inside and outside the analysis, so baseline and reporting data are collected consistently. It prevents double counting and clarifies which loads are attributed to the measure.

Question 33Fundamental Performance Verification Approaches

Which data characteristic most directly determines whether a regression-based baseline model can be used with confidence?

  1. The number of contractors on the project
  2. The color-coding of the trend charts
  3. The strength of the correlation between energy use and the independent variable Correct answer.
  4. The brand of the metering equipment

Explanation

A regression model's usefulness depends on how well the independent variable explains variation in energy use, often assessed with statistics such as R-squared and t-tests. Weak correlation means the model cannot reliably normalize consumption.

Question 34Fundamental Performance Verification Approaches

A facility installs a variable-frequency drive on a pump. Which measurement approach best isolates the pump's energy savings under IPMVP Option B?

  1. Metering the pump circuit before and after installation Correct answer.
  2. Using whole-building utility bills only
  3. Estimating savings from the design drawings
  4. Relying on the manufacturer's efficiency label alone

Explanation

Option B measures the performance of the specific system or subsystem, so dedicated metering of the pump circuit captures its actual consumption change. Whole-building data would be confounded by other loads, and nameplate or design values are not measurements.

Question 35Fundamental Performance Verification Approaches

A baseline regression yields an R-squared of 0.35 for monthly data. What is the most appropriate interpretation for M&V purposes?

  1. The model proves the measure caused the savings
  2. The model explains most variation and is highly reliable
  3. The model should be discarded because R-squared is never used in M&V
  4. The model explains little variation and may be inadequate for normalization Correct answer.

Explanation

An R-squared of 0.35 indicates that only about a third of the variation in energy use is explained by the independent variable, suggesting poor model fit. Such a model may not reliably normalize consumption and should be improved or a different approach considered.

Question 36Fundamental Performance Verification Approaches

During the reporting period, a facility adds a new server room that was not present in the baseline. How should this be handled in the savings calculation?

  1. Ignore it because it is small relative to total use
  2. Increase the baseline by the design load of the server room without measurement
  3. Apply a non-routine adjustment to account for the added load Correct answer.
  4. Reduce the reporting-period consumption by an assumed factor

Explanation

A significant new load that was not part of the baseline conditions is a non-routine change and must be quantified and adjusted so savings are not understated. The adjustment is based on measured or well-documented data for the added load.

Question 37Fundamental Performance Verification Approaches

Which sampling consideration is most important when verifying savings across a population of similar retrofitted units?

  1. Selecting only the units that performed best
  2. Measuring every unit regardless of cost
  3. Choosing units based on ease of access alone
  4. Ensuring the sample is representative and of adequate size Correct answer.

Explanation

Sampling must be representative of the population and large enough to achieve the desired confidence and precision. Biased or convenience-based samples produce unreliable savings estimates for the whole population.

Question 38Fundamental Performance Verification Approaches

What does the term 'measurement and verification period' refer to in an M&V plan?

  1. The time between equipment purchase and delivery
  2. The interval between utility meter replacements
  3. The duration over which savings are determined and reported Correct answer.
  4. The warranty coverage window for the contractor

Explanation

The M&V period defines the reporting timeframe over which post-installation performance is measured and compared with the adjusted baseline. Its length is chosen to capture representative operation and meet the program's needs.

Question 39Fundamental Performance Verification Approaches

A calibrated simulation approach (IPMVP Option D) is most appropriate when which condition applies?

  1. The measure affects the whole building and no reliable baseline data exist Correct answer.
  2. The retrofit can be easily isolated with a dedicated meter
  3. The measure has no measurable energy impact
  4. Savings can be determined from utility bills alone

Explanation

Option D is suited to whole-building or complex measures where measured baseline data are unavailable or where interactive effects are significant, requiring a simulation tuned to actual data. It is more resource-intensive and used when simpler options are inadequate.

Question 40Fundamental Performance Verification Approaches

Which practice most improves the reliability of post-installation measurements in an M&V effort?

  1. Recording data only during peak hours
  2. Using calibrated instruments and consistent measurement intervals Correct answer.
  3. Relying on operator recollections of operating hours
  4. Averaging dissimilar end uses into one value

Explanation

Calibrated instruments and consistent, representative measurement intervals reduce systematic and random error in the data. Reliable measurement is the foundation of defensible savings verification.

Question 41Fundamental Performance Verification Approaches

In a savings report, why is it important to state the uncertainty associated with the verified savings?

  1. To replace the need for a baseline
  2. To make the report longer
  3. To communicate the confidence range so decisions account for estimation error Correct answer.
  4. To guarantee the savings will be realized

Explanation

Savings are estimates derived from measurements and models, each with error. Reporting uncertainty conveys the confidence range so stakeholders can judge whether savings meet expectations and make informed decisions.

Question 42Fundamental Performance Verification Approaches

Which statement correctly distinguishes measurement from verification in M&V terminology?

  1. They are identical terms with no distinction
  2. Verification collects data, while measurement confirms contractual compliance
  3. Measurement collects data, while verification confirms that savings are achieved as planned Correct answer.
  4. Measurement applies only to electricity, while verification applies only to gas

Explanation

Measurement is the activity of gathering quantitative data on energy use and conditions, whereas verification is the process of confirming that the reported savings are supported by that data and the agreed method. Together they form the M&V discipline.

Question 43Fundamental Performance Verification Approaches

A retrofit's savings are computed as adjusted baseline minus actual reporting-period use. If the adjusted baseline is 1,200 MWh and actual use is 1,050 MWh, what are the verified savings?

  1. 50 MWh
  2. 1,050 MWh
  3. 150 MWh Correct answer.
  4. 2,250 MWh

Explanation

Verified savings equal the adjusted baseline (1,200 MWh) minus actual reporting-period use (1,050 MWh), which is 150 MWh. The adjusted baseline already reflects routine conditions.

Question 44Fundamental Performance Verification Approaches

Which factor most directly justifies selecting a more rigorous and costly M&V option for a project?

  1. The aesthetic appearance of the metering equipment
  2. The color of the utility bills
  3. The number of pages in the contract
  4. The project's savings magnitude and the financial risk borne by the parties Correct answer.

Explanation

The choice of M&V option balances cost against the value of accuracy, which rises with the size of the savings and the financial stakes for the parties. Larger or riskier projects warrant more rigorous verification.

Question 45Fundamental Performance Verification Approaches

What is the role of a static factor in baseline normalization?

  1. A measure of meter accuracy
  2. A parameter that does not vary during the analysis period and is used to adjust for conditions Correct answer.
  3. A type of energy-saving device
  4. A variable that changes continuously with weather

Explanation

Static factors are quantities that remain essentially constant over the analysis period, such as conditioned floor area or a fixed occupancy level, and are used to adjust baseline data for condition differences. They differ from routine variables that fluctuate.

Question 46Fundamental Performance Verification Approaches

A model's t-statistic for a weather coefficient is very low. What does this imply for the baseline model?

  1. The model's R-squared must be exactly one
  2. The coefficient is not statistically significant and its inclusion may be questionable Correct answer.
  3. The coefficient is highly significant and should be retained
  4. The independent variable perfectly explains energy use

Explanation

A low t-statistic indicates the estimated coefficient is not statistically distinguishable from zero, suggesting the variable may not meaningfully explain energy use. Analysts should reconsider including such a variable in the normalization model.

Question 47Fundamental Performance Verification Approaches

In an Option C application, the facility boundary is the whole building and a new chiller is installed. Which adjustment approach best preserves the integrity of the savings calculation?

  1. Measure the chiller separately and add its savings to the whole-building result
  2. Adjust the whole-building baseline for the chiller change using measured data on the new equipment's effect Correct answer.
  3. Compare utility bills without any adjustment
  4. Rely solely on the chiller nameplate efficiency

Explanation

When the boundary is the whole facility, changes inside it must be accounted for so the comparison remains valid; the effect of the new chiller is quantified and applied as an adjustment. This keeps the whole-building savings attributable to the intended measures.

Question 48Fundamental Performance Verification Approaches

Why can interactive effects between measures complicate savings verification?

  1. They always increase savings beyond predictions
  2. They only occur in buildings without meters
  3. The combined effect of measures may differ from the sum of their individual effects Correct answer.
  4. They eliminate the need for a baseline

Explanation

Interactive effects mean that installing multiple measures can produce savings that are not simply additive, because one measure may change the load seen by another. Verification must account for these interactions to avoid over- or under-stating savings.

Question 49Fundamental Performance Verification Approaches

An analyst uses a single-variable temperature regression for a facility whose energy use also depends strongly on production volume. What is the most likely consequence for verified savings?

  1. Savings will be exactly zero
  2. Savings may be biased because a relevant independent variable is omitted Correct answer.
  3. The baseline will automatically correct for production changes
  4. Savings will be unbiased because temperature is the dominant driver

Explanation

Omitting a relevant independent variable produces an omitted-variable bias, so the model misattributes production-driven variation to the measure. Including the missing driver improves normalization accuracy.

Question 50Fundamental Performance Verification Approaches

Which combination best characterizes a robust M&V plan for a large, high-value project?

  1. A single utility bill comparison with no baseline model
  2. Defined boundary, calibrated measurement, documented adjustments, and reported uncertainty Correct answer.
  3. Estimates based on manufacturer claims only
  4. Stipulated savings with no measurement and annual reports

Explanation

A robust plan specifies the measurement boundary, uses calibrated measurement appropriate to the option, documents routine and non-routine adjustments, and reports uncertainty. These elements together make the savings determination defensible.