IIBA-CBDA study materials
IIBA-CBDA study resources

IIBA-CBDA key terms

IIBA-CBDA · Get comfortable with the vocabulary.

Research Question

A focused, answerable question that states exactly what the analyst needs to learn in order to address a business problem and direct the data work.

Related: Research Objective, Hypothesis, Research Scope
Business Problem Statement

A concise description of the gap between the current and desired business situation, including who is affected and why it matters.

Related: Research Question, Root Cause Analysis, Success Criteria
Research Objective

A statement of what the analysis is meant to accomplish, expressed with measurable outcomes so that success can later be judged.

Related: Research Question, Success Criteria
Hypothesis

A testable, provisional explanation or prediction about the data that the analyst will confirm or reject using evidence.

Related: Research Question, Statistical Significance, Inferential Statistics
Research Scope

The boundaries of an analysis, stating which questions, data, time periods, and stakeholders are included and which are explicitly excluded.

Related: Research Question, Research Plan, Assumption
Assumption

Something accepted as true for planning purposes without supporting evidence, which must be validated before results are relied upon.

Related: Limitations and Caveats, Research Scope
Root Cause Analysis

A structured method for tracing a visible symptom back to the underlying causes so that analysis targets the real problem rather than its effects.

Related: Business Problem Statement, Current State Analysis
Success Criteria

Pre-agreed, measurable conditions that define whether the research answered its questions well enough to support a decision.

Related: Research Objective, Key Performance Indicator
Current State Analysis

An examination of how processes, data, and performance work today, providing a baseline against which future changes are compared.

Related: Root Cause Analysis, Descriptive Statistics
Research Plan

A document describing the questions, data sources, methods, timeline, roles, and deliverables for an analysis effort.

Related: Research Scope, Data Source, Sampling
Primary Data

Data collected directly from original sources, such as surveys, interviews, or observations, specifically for the question at hand.

Related: Secondary Data, Sampling
Secondary Data

Data that already exists because someone else gathered it for another purpose, such as published reports, sales records, or government statistics.

Related: Primary Data, Data Source, Data Lineage
Data Source

Any system, person, document, or repository from which data is obtained, together with its owner and access conditions.

Related: System of Record, Data Lineage, Data Profiling
Data Quality Dimensions

The characteristics used to judge whether data is fit for use, commonly completeness, accuracy, consistency, timeliness, validity, and uniqueness.

Related: Data Profiling, Data Cleansing
Data Profiling

A technique of examining data structure, values, and patterns to reveal gaps, duplicates, invalid entries, and unexpected distributions before analysis begins.

Related: Data Quality Dimensions, Outlier, Data Cleansing
Data Dictionary

A reference that defines each data element's meaning, format, allowed values, owner, and source so that terms are used consistently.

Related: Data Lineage, Data Source
Data Lineage

The documented path data travels from origin through transformations to reporting, used to trace errors and demonstrate trustworthiness.

Related: Data Dictionary, System of Record
Population

The complete set of items, people, or transactions about which the analyst wants to draw conclusions.

Related: Sampling, Inferential Statistics
Sampling

Selecting a subset of a population to analyze when examining everything is impractical, together with the method used to choose that subset.

Related: Population, Inferential Statistics, Limitations and Caveats
Personally Identifiable Information

Data that can single out an individual, directly or in combination with other data, and therefore requires protection and lawful handling.

Related: Data Source, Data Lineage
System of Record

The authoritative source that holds the official, master version of a data element when several systems contain similar values.

Related: Data Source, Data Lineage
Descriptive Statistics

Summary measures such as totals, averages, percentages, and spread that describe what is in a dataset without generalizing beyond it.

Related: Inferential Statistics, Outlier
Inferential Statistics

Methods that use sample data to estimate population values or test hypotheses, producing confidence intervals and probability-based conclusions.

Related: Statistical Significance, Sampling, Correlation
Correlation

A measured relationship in which two variables move together; on its own it does not show that one causes the other.

Related: Inferential Statistics, Trend Analysis, Statistical Significance
Trend Analysis

Comparing values over time to identify the direction, rate, and pattern of change, including seasonality, so future performance can be anticipated.

Related: Descriptive Statistics, Segmentation
Segmentation

Dividing a population into meaningful groups sharing characteristics so that patterns and needs hidden in aggregate totals become visible.

Related: Trend Analysis, Descriptive Statistics, Insight
Outlier

A value far from the rest of the observations, which may signal a data error, a rare event, or an important exception worth investigating.

Related: Data Profiling, Descriptive Statistics
Statistical Significance

A measure of how unlikely an observed result would be if no real effect existed; it supports but does not prove a conclusion.

Related: Inferential Statistics, Hypothesis, Limitations and Caveats
Data Cleansing

Correcting or removing inaccurate, duplicated, incomplete, or badly formatted records so that analysis rests on reliable input.

Related: Data Quality Dimensions, Data Profiling
Data Visualization

Representing data graphically, such as with charts or dashboards, so that patterns are seen faster than through tables alone.

Related: Data Storytelling, Descriptive Statistics
Data Interpretation

Explaining what the analysis results mean in business terms, including what changed, by how much, and what that implies.

Related: Finding, Insight, Limitations and Caveats
Finding

A factual, evidence-based statement produced by the analysis, stated without judgment or proposed action.

Related: Insight, Data Interpretation
Insight

A finding connected to context and consequence that explains why something happened and what it means for the business.

Related: Finding, Actionable Insight, Data Storytelling
Data Storytelling

Presenting results as a coherent narrative that links evidence, meaning, and recommended action for a specific audience.

Related: Insight, Data Visualization, Recommendation
Limitations and Caveats

The acknowledged weaknesses of an analysis, such as data gaps, assumptions, or sample bias, that bound how far its conclusions can be trusted.

Related: Assumption, Data Interpretation, Statistical Significance
Recommendation

A specific, justified proposal for action that follows from the analysis and states the expected benefit, the owner, and the conditions for success.

Related: Actionable Insight, Cost-Benefit Analysis, Decision Matrix
Actionable Insight

An insight specific enough and timely enough for a decision maker to act on, naming the affected area and the likely effect of acting.

Related: Insight, Recommendation
Cost-Benefit Analysis

Comparing the expected costs of an option with its expected benefits, often in monetary terms, to judge whether pursuing it is worthwhile.

Related: Decision Matrix, Recommendation
Decision Matrix

A table that scores options against weighted criteria so that alternatives can be compared transparently and the chosen option justified.

Related: Cost-Benefit Analysis, Recommendation
Key Performance Indicator

A defined, repeatable measure used to track whether a chosen action delivers the intended business outcome over time.

Related: Success Criteria, Recommendation