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ATI TEAS practice questions

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Question 1Reading

Honeybees communicate the location of food through a movement called the waggle dance. A returning forager circles in a figure-eight pattern, shaking her abdomen along the middle line. The angle of that middle line relative to vertical tells other bees the direction of the food source relative to the sun, and the duration of the shake indicates distance. Which sentence best states the main idea of the passage?

  1. Honeybees circle in a figure-eight pattern when they return to the hive after a long flight.
  2. Forager bees shake their abdomens in order to keep warm.
  3. The position of the sun helps foragers navigate back to the hive.
  4. Honeybees use a specific dance to share food locations. Correct answer.

Explanation

The main idea is the central point that all the details support. Every detail in the passage explains how the waggle dance conveys the direction and distance of food, so the dance's communicative function is the main idea.

Question 2Reading

The city opened its new bike lane on Elm Street last month. Since then, average commute times for drivers on Elm have risen by four minutes. The lane is a needless burden on drivers who already pay high taxes. Which statement from the passage is an opinion rather than a fact?

  1. The new lane is a needless burden on drivers. Correct answer.
  2. Elm Street now has a marked bike lane.
  3. The bike lane on Elm Street opened last month.
  4. Driver commute times on Elm rose four minutes.

Explanation

A fact can be verified through observation or records, while an opinion expresses a judgment or value claim. Calling the lane a "needless burden" is a judgment that cannot be proven true or false, unlike the dates, markings, and measured times.

Question 3Reading

The committee's report was terse, offering only a few sentences on each issue and no background explanation. As used in the sentence, the word "terse" most nearly means

  1. rude
  2. brief Correct answer.
  3. lengthy
  4. confusing

Explanation

Context clues in the sentence define the word: the report offers "only a few sentences" and lacks background, which points to shortness. A terse statement is one that uses few words.

Question 4Reading

Before you begin, unpack all parts and lay them out on a flat surface. Insert bolt A through panel B and tighten it with the hex wrench. Attach the back panel last, and check that all fasteners are snug before standing the unit upright. What is the author's primary purpose in this passage?

  1. To explain how to put a bookshelf together Correct answer.
  2. To persuade readers to purchase a bookshelf
  3. To describe how furniture is designed by engineers
  4. To narrate a personal experience with assembly

Explanation

The passage gives ordered directions using imperative verbs such as "unpack," "insert," and "attach." Writing that tells a reader how to perform a task has the purpose of explaining a process.

Question 5Reading

The library extended its weekday hours to 9 p.m. Attendance in the evening rose 30 percent, and requests for study-room reservations doubled. Staff reported that most evening visitors were students preparing for exams. Which detail best supports the claim that the extended hours were popular with the community?

  1. Study rooms can be reserved in advance.
  2. The library stays open until 9 p.m. on weekdays.
  3. Staff reported that visitors were students.
  4. Evening attendance rose 30 percent. Correct answer.

Explanation

A supporting detail must directly back the stated claim. Rising attendance is a measure of use, which is exactly what popularity means here.

Question 6Reading

A reader wants to find the page on which a chapter about photosynthesis begins. Which text feature is most useful for this purpose?

  1. A footnote
  2. The index
  3. The glossary
  4. The table of contents Correct answer.

Explanation

A table of contents lists chapters and sections in order along with their page numbers. The index lists topics alphabetically and points to scattered page mentions, which is less direct for locating a chapter's start.

Question 7Reading

The wind tugged at my coat as I climbed the last stretch of the ridge. Below me, the valley lay in shadow, and the first lights were coming on in the farmhouses. This passage is best classified as

  1. a persuasive speech
  2. an expository essay
  3. narrative writing Correct answer.
  4. a technical manual

Explanation

The passage uses first-person narration, sensory description, and a sequence of actions, all hallmarks of narrative writing. Expository and technical texts, by contrast, explain information without a personal storyteller.

Question 8Reading

First, bring water to a boil. Then pour it over the leaves and let them steep for three minutes. Remove the leaves, and add milk if desired. Which step comes immediately after pouring water over the leaves?

  1. Measuring the leaves
  2. Steeping for three minutes Correct answer.
  3. Adding milk
  4. Boiling the water

Explanation

The passage signals order with words like "first," "then," and "after." The step directly following the pour is the three-minute steep, with milk added only afterward.

Question 9Reading

When Marisol arrived at the community garden, the gate was padlocked and the toolshed was empty. A handwritten sign on the fence read, "Meeting moved to the library." She checked her phone: no messages. What can the reader most reasonably infer?

  1. The toolshed was broken into during the previous night.
  2. The community garden has been permanently closed to visitors.
  3. Marisol did not know the meeting had moved. Correct answer.
  4. Marisol had written the sign herself earlier that day.

Explanation

An inference must be supported by details in the text. Marisol came to the garden for a meeting, found it locked and relocated, and had no message about the change, which together suggest she was uninformed.

Question 10Reading

The proposal promises sweeping improvements, yet it offers no budget and no timeline. Its supporters cite "community enthusiasm" as evidence, which is not evidence at all. The tone of the passage is best described as

  1. nostalgic
  2. skeptical Correct answer.
  3. enthusiastic
  4. apologetic

Explanation

Tone is the writer's attitude toward the subject, revealed through word choice. Phrases such as "no budget and no timeline" and "not evidence at all" show doubt about the proposal's merit.

Question 11Reading

The barn owl hunts almost entirely by sound, tilting its head to pinpoint a mouse beneath snow. The great horned owl, by contrast, relies more heavily on its large eyes and typically strikes from a perch. How is this passage organized?

  1. As a sequence of events in time
  2. As a comparison of two subjects Correct answer.
  3. As a cause followed by its effects
  4. As a problem followed by a solution

Explanation

The passage presents two owls and highlights how they differ in hunting method. Signal words such as "by contrast" mark a comparison-and-contrast structure.

Question 12Reading

Our competitors' software is clunky and outdated. Ours is the only reasonable choice for any serious business. The statement is biased mainly because it

  1. cites several statistics that readers cannot verify
  2. quotes experts who disagree with one another
  3. relies on loaded language rather than evidence Correct answer.
  4. describes events out of chronological order

Explanation

Bias appears when a writer uses emotionally charged wording in place of supportable reasons. Words like "clunky" and "only reasonable choice" push a judgment without offering any data or demonstration.

Question 13Reading

The town's recycling program began in 2010 with curbside pickup of paper only. Plastic and glass were added in 2014, and yard-waste composting followed in 2018. Participation has grown each year, and the town now diverts 40 percent of its waste from landfills. Which sentence best summarizes the passage?

  1. The town's recycling program has grown and now diverts more waste. Correct answer.
  2. Forty percent of the town's waste now goes to landfills each year.
  3. Yard-waste composting started in 2018 and proved popular with residents.
  4. The town began picking up paper at the curb in 2010 and added other items later.

Explanation

A summary states the overall point in general terms rather than listing every fact. This passage traces expansion in services and the resulting increase in diverted waste.

Question 14Reading

Because the bridge's expansion joints had not been replaced in twenty years, the deck shifted slightly in extreme heat, and engineers closed two lanes for inspection. According to the passage, what caused the deck to shift?

  1. Expansion joints were not replaced for twenty years. Correct answer.
  2. Two lanes were closed for inspection.
  3. Traffic volumes increased over twenty years.
  4. Engineers inspected the bridge during a heat wave.

Explanation

The passage introduces the cause with "because": aged expansion joints. The lane closures are a result of the shifting, not its cause.

Question 15Reading

From a nurse's perspective, the new scheduling software saves time at shift change; from an administrator's, it costs too much to maintain. Which statement best describes the passage's point of view?

  1. It describes how the software was designed and tested.
  2. It presents the software only from a patient's view.
  3. It shows two perspectives on the same software. Correct answer.
  4. It argues that the software should be removed.

Explanation

Point of view refers to the vantage point from which information is presented. The passage deliberately pairs a nurse's view with an administrator's, offering two stances without endorsing either.

Question 16Reading

The training manual was a labyrinth; every answer it gave led to three more questions. The phrase "was a labyrinth" is an example of

  1. personification
  2. simile
  3. metaphor Correct answer.
  4. onomatopoeia

Explanation

A metaphor directly states that one thing is another in order to transfer qualities. Calling the manual a labyrinth compares it to a maze without using "like" or "as."

Question 17Reading

In a study of 200 commuters, those who biked to work reported an average of 30 more minutes of weekly exercise than drivers, and both groups reported sleeping about the same number of hours. Which conclusion is best supported by the passage?

  1. Biking commuters reported more weekly exercise than drivers. Correct answer.
  2. Commuters who drive get no exercise at all during the week.
  3. Biking to work improves the quality of a person's sleep at night.
  4. Exercise causes people to choose bicycling over driving.

Explanation

A valid conclusion stays within what the evidence directly shows. The only difference the study reports is 30 additional minutes of weekly exercise among bikers.

Question 18Reading

A student needs a brief definition and the pronunciation of the word "sediment." Which reference source is most appropriate?

  1. An atlas
  2. An almanac
  3. A dictionary Correct answer.
  4. A thesaurus

Explanation

A dictionary supplies definitions, pronunciations, and parts of speech for words. Other reference works organize information differently and would not provide both of these details.

Question 19Reading

Two farmers shared a well. One repaired his bucket each season; the other borrowed until the day the well ran dry, and then had nothing to draw with. Which theme is best supported by this story?

  1. Wells are unreliable sources of water in dry seasons.
  2. Farmers often disagree about shared property.
  3. Borrowing tools is always a poor choice between friends.
  4. Preparing in advance prevents later hardship. Correct answer.

Explanation

A theme is an underlying message about life that the events illustrate. The farmer who maintained his own bucket was ready when the well failed, while the other was left without a means to draw water.

Question 20Reading

A reader is evaluating sources about a new drug's side effects. Which source is likely the most credible?

  1. A promotional brochure printed by the company that makes the drug
  2. A blog post that summarizes a magazine article
  3. A testimonial posted by a patient on a forum
  4. A peer-reviewed study published in a medical journal Correct answer.

Explanation

Credibility depends on expertise, review by others, and freedom from a conflicting interest. A peer-reviewed study has been examined by independent specialists before publication.

Question 21Reading

Every year, our town spends more on leaf collection than on its public library. Which of these do our children use more? The author's main rhetorical strategy is to

  1. quote local officials who support the current budget
  2. compare spending priorities to imply a misallocation Correct answer.
  3. narrate a personal story about a child using the library
  4. provide detailed statistics about the library's annual budget

Explanation

The author sets two budget items side by side and follows with a pointed question, steering readers toward a judgment about priorities. This contrast is a persuasive technique rather than a presentation of evidence.

Question 22Reading

Three of the last four mayors have been lawyers, so a lawyer is more likely to govern well. Which statement best describes the flaw in this reasoning?

  1. It attacks the character of candidates rather than their policies.
  2. It relies on an expert opinion that is never identified.
  3. It assumes that all lawyers want to hold public office.
  4. It draws a conclusion about ability from a small sample. Correct answer.

Explanation

The argument moves from a pattern among four officeholders to a general claim about governing ability. Four cases are far too few to support such a broad conclusion.

Question 23Reading

Although the vaccine reduced hospitalizations by 60 percent in the trial, the authors caution that participants were mostly under 50 and that the results may not apply to older adults. Which statement is most consistent with the passage?

  1. Hospitalizations fell by 60 percent among adults over 50.
  2. The vaccine is ineffective in adults over the age of 50.
  3. The trial proved the vaccine works equally well in every age group.
  4. The vaccine's benefit for older adults has not been established. Correct answer.

Explanation

The passage reports a strong result but limits it to a younger trial population, so the effect in older adults remains open. A consistent statement preserves that uncertainty instead of overstating it.

Question 24Reading

The report's findings are, at best, preliminary. Its authors surveyed only two dozen households, yet the press has treated the conclusions as settled science. Which statement best captures the author's view?

  1. The press accurately described the results of a well-designed study.
  2. The press gave the study's conclusions more weight than they deserve. Correct answer.
  3. The report should not have been released to the public at all.
  4. The study's authors deliberately misled the press about their results.

Explanation

The author contrasts the study's small scope with the certainty of news coverage, signaling that the reporting overstated the findings. The complaint targets the coverage, not the motives of the researchers.

Question 25Reading

A gym claims its 6 a.m. class "boosts metabolism all day." The evidence offered is a survey in which 80 percent of attendees said they felt more energetic after class. Why is the evidence insufficient to support the claim?

  1. Feeling energetic is not a measure of all-day metabolism. Correct answer.
  2. The survey did not ask how long attendees had been members.
  3. Eighty percent is too small a majority to be meaningful.
  4. The class time was not clearly stated to survey participants.

Explanation

Evidence must measure the same thing the claim asserts. The claim concerns metabolism lasting all day, while the survey records only a subjective feeling of energy right after class.

Question 26Reading

Each autumn, monarch butterflies east of the Rocky Mountains travel up to 3,000 miles to forests in central Mexico. No single butterfly makes the round trip; the insects that return north in spring are several generations removed from those that flew south. The journey is guided by a combination of sun position and an internal magnetic compass. Which sentence best states the main idea of the passage?

  1. Sun position and an internal magnetic compass both help monarchs navigate.
  2. No individual monarch survives the full round trip between Mexico and the northern states.
  3. Monarch butterflies make a remarkable multigenerational migration. Correct answer.
  4. Monarchs east of the Rockies winter in central Mexico, where the climate is mild and the forests are dense.

Explanation

A main idea must cover the entire passage rather than one supporting detail. The passage describes the length of the journey, the generations involved, and the navigation methods, all of which support the idea of a remarkable multigenerational migration.

Question 27Reading

At the bottom of a page in a history textbook, a small numbered note explains where a quoted statistic came from. This text feature is best identified as a

  1. glossary.
  2. index.
  3. footnote. Correct answer.
  4. title page.

Explanation

A footnote is a note placed at the bottom of a page that comments on or cites the source of material in the main text. The location and the source citation are the defining clues.

Question 28Reading

Which of the following sentences from a restaurant review states a fact rather than an opinion?

  1. The dining room is far too loud for conversation.
  2. The restaurant opens at 5 p.m. on weekdays. Correct answer.
  3. The servers seem rushed and unfriendly.
  4. The brisket is the best in the city.

Explanation

A fact is a statement that can be checked and verified objectively, such as a posted opening time. Opinions express judgments, feelings, or interpretations that reasonable people could dispute.

Question 29Reading

A pamphlet explains how to perform hands-only CPR, presenting numbered steps and a diagram showing correct hand placement. The author's primary purpose is to

  1. entertain readers with a personal story.
  2. persuade readers to donate to a charity.
  3. instruct readers in a procedure. Correct answer.
  4. compare two CPR methods from history.

Explanation

Numbered steps and a placement diagram are hallmarks of procedural text, whose purpose is to teach a reader how to perform a task. The format signals instruction rather than persuasion or narration.

Question 30Reading

Read the sentence: "The supervisor's rebuke was so sharp that several employees left the meeting with red faces." As used in the sentence, "rebuke" most nearly means

  1. a compliment.
  2. a criticism. Correct answer.
  3. an announcement.
  4. a question.

Explanation

Context clues such as "sharp" and "red faces" signal an uncomfortable scolding, so "rebuke" means a criticism. A reader can confirm the meaning by substituting each option into the sentence.

Question 31Reading

A lab manual states: "Before calibrating the scale, remove all weight from the platform. Calibration performed with weight on the platform will produce inaccurate readings." A technician calibrates the scale while a sample remains on the platform. What is the most likely result?

  1. The scale will calibrate faster than usual.
  2. The platform will be permanently damaged.
  3. The readings will be inaccurate. Correct answer.
  4. The scale will shut off automatically.

Explanation

Directions often state a condition that must be met before a step can be done correctly. Because the manual warns that weight on the platform produces inaccurate readings, skipping that condition has exactly that result.

Question 32Reading

A student wants to replace the word "happy" with a word that means nearly the same thing. Which reference source is most appropriate?

  1. a thesaurus Correct answer.
  2. a bibliography
  3. an almanac
  4. an atlas

Explanation

A thesaurus lists synonyms and antonyms, which is exactly what a writer needs to substitute one word for another with a similar meaning. Dictionaries define words but do not organize them by similarity.

Question 33Reading

Read the passage: "The committee's report arrived three weeks late, missing half the requested data and containing a spelling error in its first line. One can only admire the thoroughness of its preparation." The tone of the second sentence is best described as

  1. admiring.
  2. neutral.
  3. anxious.
  4. sarcastic. Correct answer.

Explanation

The writer applies the word "thoroughness" to a report described as late, incomplete, and sloppy, praising it for the opposite of its faults. That deliberate inversion signals sarcasm.

Question 34Reading

When the lights in the gym flickered and went out, Coach Reyes did not pause. She reached for the glow sticks in her bag and continued calling out drills, her voice steady over the groans of the players. What can the reader most reasonably infer?

  1. The coach ended practice early that evening.
  2. The gym's lights had never failed before.
  3. The coach was prepared for a power failure. Correct answer.
  4. The players had asked to practice in the dark.

Explanation

An inference is a conclusion supported by details but not stated directly. Producing glow sticks immediately and staying calm indicate the coach had planned ahead for an outage.

Question 35Reading

The city's bike-share program launched with 200 bikes at 20 stations. Within a year it had 1,200 bikes at 90 stations, and ridership had tripled. Maintenance costs, however, rose faster than expected, and the program now depends on a grant to pay for repairs. Which sentence best summarizes the passage?

  1. The bike-share program now operates 1,200 bicycles.
  2. The city launched the program with 200 bikes at 20 stations.
  3. Maintenance costs for the bicycles rose faster than the city had originally expected them to.
  4. The program grew quickly but faces a funding challenge for repairs. Correct answer.

Explanation

A summary must capture the key points of the whole passage while leaving out minor specifics. Only this sentence covers both the rapid growth and the repair-funding problem.

Question 36Reading

Read the passage: "Unlike the eastern bluebird, which nests in tree cavities, the mountain bluebird builds its nest in crevices among rocks. Both species, however, feed mainly on insects caught in flight." The passage is organized mainly by

  1. cause and effect.
  2. a problem-and-solution organization.
  3. chronological order.
  4. comparison and contrast. Correct answer.

Explanation

Signal words such as "unlike" and "however" place two subjects side by side, which is the pattern of comparison and contrast. The paragraph notes both differences and a similarity between the two species.

Question 37Reading

An advertisement reads: "Join the thousands of smart homeowners who have already switched to SolarMax panels." Which persuasive technique does the advertisement use?

  1. citing the research of a recognized expert
  2. presenting statistical evidence from surveys
  3. appealing to the reader's desire to belong Correct answer.
  4. describing a controlled experiment

Explanation

The phrase "thousands of smart homeowners" invites readers to join an admired group, a bandwagon appeal. It offers no expert, data, or experiment to support the product's quality.

Question 38Reading

Read the passage: "Several factors contributed to the colony's decline. Drought reduced the harvest for three straight years, and a fire in 1701 destroyed the granary. Trade with inland villages also slowed after the river shifted course." Which detail supports the claim that the colony's food storage was disrupted?

  1. A fire destroyed the granary in 1701. Correct answer.
  2. Trade with inland villages slowed.
  3. The river shifted course.
  4. Drought reduced the harvest for three years.

Explanation

A granary is a building used to store grain, so its destruction speaks directly to disrupted storage. The other details affect food production or trade rather than stored supply.

Question 39Reading

All students in the honors program must complete a thesis. Priya has completed a thesis. Which conclusion is best supported?

  1. Completing a thesis guarantees admission to the honors program.
  2. Priya may or may not be in the honors program. Correct answer.
  3. Priya cannot be in the honors program.
  4. Priya must be in the honors program.

Explanation

The premise states a requirement for honors students; it does not state that only honors students write theses. Because other students might also complete theses, Priya's status cannot be determined.

Question 40Reading

A student is researching the daily life of soldiers during the U.S. Civil War. Which of these is a primary source for that topic?

  1. An encyclopedia entry describing the war's major battles
  2. A textbook chapter summarizing the war's battles
  3. A letter written by a soldier to his family in 1863 Correct answer.
  4. A documentary film about the war made in 2010

Explanation

A primary source is a firsthand record created by a participant or witness at the time of the events. A soldier's wartime letter meets both conditions, while the other options are later interpretations.

Question 41Reading

For the past six weeks, the bakery on Elm Street has sold out of sourdough by 10 a.m., and the owner has begun baking a second batch each morning. Which is the most reasonable prediction?

  1. The owner will reduce the number of batches.
  2. The bakery will continue to bake extra sourdough. Correct answer.
  3. Customers will begin arriving later in the morning.
  4. The bakery will soon stop selling sourdough.

Explanation

A prediction should follow from the trend in the passage. Repeated sellouts followed by an increase in production indicate steady demand, which supports continued extra batches.

Question 42Reading

Read the sentence: "After the third delay, the manager told the crew they were skating on thin ice." The phrase "skating on thin ice" means that the crew is

  1. working in a cold environment.
  2. enjoying a well-deserved break from work.
  3. confused about the work schedule.
  4. in danger of serious consequences. Correct answer.

Explanation

The phrase is an idiom, meaning its sense is figurative rather than literal. In this context of repeated delays and a warning, it means the crew risks serious consequences.

Question 43Reading

Read the sentences: "The report was thorough. ______, it arrived too late to influence the vote." Which transition word best completes the sentence?

  1. Therefore
  2. In addition
  3. However Correct answer.
  4. For example

Explanation

The two sentences contrast a strength with a serious weakness. "However" is the transition that signals contrast between those ideas.

Question 44Reading

Read the argument: "The city should widen Main Street because traffic there is heavy at rush hour, and widening will allow more cars to move through." The argument assumes that

  1. Main Street is the busiest street in the city.
  2. Rush-hour traffic will remain heavy indefinitely.
  3. Wider roads will reduce congestion on Main Street. Correct answer.
  4. Drivers prefer wider streets to public transit options.

Explanation

An unstated assumption is a claim the argument needs in order to reach its conclusion. The proposal only follows if adding lanes actually relieves the congestion being described.

Question 45Reading

A blog post claims that a new study proves coffee improves memory. It links to a press release describing a study in which 30 college students drank coffee once and then took a memory test. Which statement best evaluates the post's evidence?

  1. The evidence is irrelevant because the study involves coffee.
  2. The evidence is strong because college students typically have good memories.
  3. The evidence is strong because it comes from a published scientific study of students.
  4. The evidence is weak because the sample is small and was tested only once. Correct answer.

Explanation

Evidence is only as strong as the design behind it. A single session with 30 participants cannot support a broad claim about memory, because small samples and one-time tests limit how far results generalize.

Question 46Reading

Read the passage: "The council's plan to remove the old oaks along Fourth Street has been called 'necessary for safety.' Yet the two trees that fell last winter stood on Maple, not Fourth, and the arborist's report mentions pruning-not removal." The author's attitude toward the council's stated reason is best described as

  1. indifferent.
  2. enthusiastic.
  3. supportive.
  4. doubtful. Correct answer.

Explanation

Attitude is revealed by which details a writer chooses to include. The author sets the safety claim beside facts that contradict it, which shows skepticism rather than agreement.

Question 47Reading

Read the statement: "Either we ban all cars downtown or the shops will close. There is no middle ground." Which statement best describes the flaw in this reasoning?

  1. It cites an irrelevant authority.
  2. It presents only two options when others exist. Correct answer.
  3. It draws a conclusion from a small sample of cases.
  4. It attacks the character of shop owners.

Explanation

The speaker claims a choice between two extremes while ignoring other possibilities, such as partial restrictions or delivery-hour limits. This pattern is known as a false dilemma.

Question 48Reading

Passage A argues that middle schools should start later because adolescents' sleep cycles shift after puberty. Passage B reports that one district that started later saw better attendance but also scheduling problems for interscholastic athletics. Which statement best synthesizes the two passages?

  1. Passage A is wrong because Passage B mentions scheduling problems.
  2. Both passages rely on the same evidence about attendance rates.
  3. Later start times may benefit students but create practical complications. Correct answer.
  4. Both passages agree that interscholastic athletics should be eliminated from schools entirely.

Explanation

A synthesis accurately combines the main points of both sources without favoring one. Only this statement captures Passage A's benefit claim and Passage B's report of complications.

Question 49Reading

Read the sentence: "The proposal was cheap to implement." Which revision gives the sentence a positive connotation suggesting good value?

  1. The proposal was inexpensive to implement.
  2. The proposal was penny-pinching to implement.
  3. The proposal was cost-effective to implement. Correct answer.
  4. The proposal was dirt-cheap to implement.

Explanation

Connotation is the emotional shading a word carries beyond its literal meaning. "Cost-effective" implies that the money was well spent, giving the plan a favorable shade of meaning.

Question 50Reading

A clinic reports that in January, 60 percent of patients scheduled a follow-up visit; in June, after reminder text messages were introduced, 85 percent did. Which conclusion is best supported by these figures?

  1. Reminders may have increased follow-up scheduling. Correct answer.
  2. Patients in June were sicker than patients in January.
  3. Text messages cost the clinic more than expected.
  4. Follow-up visits are unnecessary for most patients.

Explanation

A conclusion drawn from data must be limited to what the data show. Because the reminder messages are the only reported change between the two months, the data support only a cautious claim about their possible effect.