SAT Reading & Writing · Information and Ideas
Command of Evidence (quantitative) practice questions
Each free question on this page comes with its answer and a full explanation.
- Question 4A team tested whether a short retrieval exercise improved retention of newly learned terms. Students were randomly assigned to…
- Question 5A school compared the percentage of students submitting an assignment on time before and after adding a reminder message. |…
- Question 6Researchers tested whether an intervention changed both average performance and variability. | Condition | Mean score | Standard…
- Question 30A gardener recorded the average height of the same variety of plant under two light conditions after six weeks. | Light…
- Question 31Two wetlands were surveyed before and after a restoration project. | Wetland | Species before | Species after | |---|---|---| |…
- Question 32Ecologists measured seedling survival in plots with and without a temporary shade cloth during an unusually hot summer. |…
- Question 55A researcher measured the percentage of participants who remembered a warning under two presentation formats and two delay…
- Question 56A transit agency compared average weekday ridership before and after increasing peak-hour train frequency on one line. | Month |…
- Question 57A cafe tracked reusable-cup use after introducing a small discount. | Week | Discount offered? | Orders using reusable cups |…
- Question 78Economists compared average commute times in three neighborhoods before and after a new rail station opened. | Neighborhood |…
- Question 79Researchers measured the time required for two groups to locate a target symbol in a visual display. | Display type | Mean…
- Question 108A conservation team counted nests of a shorebird before and after closing one section of beach to vehicles during nesting…
- Question 123A study compared two ways of estimating the age of the same archaeological samples against independently established reference…
- Question 124A laboratory measured enzyme activity at three temperatures. | Temperature | Relative enzyme activity | |---|---| | 15 C | 42 |…
- Question 156Students read passages presented in two font sizes. Researchers then measured average reading speed. | Font size | Average words…
- Question 166A historian counted the number of advertisements for three kinds of products in two issues of the same newspaper, one published…
- Question 185Researchers surveyed the same participants before and after a public-information campaign. | Response | Before | After |…
- Question 204A community garden measured tomato yield in plots receiving two watering schedules. | Schedule | Average yield per plot |…
- Question 237A scientist tested material strength after two treatments at two temperatures. | Treatment | 20 C strength | 60 C strength |…
- Question 256A city tested two tree-planting designs on blocks with similar starting summer temperatures. | Design | Mean afternoon surface…
- Question 274A study tracked two measures after participants learned a new procedure. | Test time | Accuracy | Average completion time |…