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AP Statistics Unit 3 Practice Test: Collecting Data

Below is our AP Statistics unit 3 practice test. These questions are about the collection of data — different ways of sampling and different ways a sample may be biased. The ideas of bias, double-blind studies, control and treatment groups, experimental and observational studies, SRS (Simple Random Sampling), and stratified random sampling appear in this unit.

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AP Statistics Unit 3 Practice Test: Collecting Data

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AP Statistics Unit 3 Practice Test: Collecting Data

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1. Question

Which of the following types of studies are experimental, and which are observational?

I. A group of people were asked about their tea consumption, and self-reported stress levels are tracked, then compared to tea consumption.

II. A group of people are split in half, with one half being asked to meditate three times a week. Self-reported stress levels in both groups are tracked.

III. People are told to either wake up without an alarm for two weeks, or wake up at a specific time with an alarm for two weeks. Self-reported stress levels are tracked.

IV. Participants are classified as very social, moderately social, or not very social based on their number of social engagements per month. Each group is then asked to record self-reported stress levels.

2. Question

Researchers are trying to determine whether chocolate milk can be linked to sleep difficulties. They conduct several experiments. Which of the following situations describes an appropriate conclusion for the experiment?

3. Question

A principal wants to know the most popular food served in the cafeteria. Students are divided by grade, and then chosen at random from within each grade. Which sampling method was used?

4. Question

A sports team wants to determine the best type of concessions to serve for the next season. The staff decides to divide ticket holders in clusters based on seat location, and then randomly choose three seating areas to survey. Which of the following is most likely to be true?

5. Question

A school counselor wants to ask students about a potential new class. The first 100 students are asked, “Should the school add a game design course to the schedule?” Which of the following would be effective at reducing bias?

6. Question

A researcher is designing an experiment to test the effectiveness of a particular educational technique for fifth-grade math. Which of these are potential confounding variables?

7. Question

Which of the following situations illustrates an element of a well-designed experiment?

8. Question

What is the advantage of randomized assignment to groups in an experiment?

9. Question

Which of the following is an advantage of a double-blind study?

10. Question

Which of the following statements is false?

Next: AP Statistics Practice Test 4