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📚AP Statistics
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📚AP Statistics

FRQ 1 – Focus on Exploring Data
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Unit 1: Exploring One-Variable Data
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AP Stats FRQ Types & Units

Each FRQ type tests specific skills taught in particular units. Here's why certain units appear for each question type:

FRQFocusUnitsWhy
FRQ 1Exploring Data1, 2Tests describing/analyzing data (distributions, scatterplots, correlation)
FRQ 2Sampling & Experimental Design3 onlyTests designing studies, identifying bias, randomization - all Unit 3 content
FRQ 3Probability & Sampling Distributions4, 5Tests probability calculations, expected value, sampling distributions
FRQ 4Inference6, 7, 8, 9Tests hypothesis tests and confidence intervals - each unit covers a different inference type
FRQ 5Multi-FocusAllCombines multiple skills across units in one integrated question
FRQ 6Investigative TaskAllOpen-ended investigation that can draw from any content

This mapping reflects College Board's exam structure - each FRQ type tests specific skills that are taught in particular units.

Practice FRQ 1 of 191/19

1. Ms. Lin, a food scientist at a nutrition research institute, is investigating the sugar content in two popular varieties of breakfast cereal, Variety X and Variety Y. She wants to compare the amount of sugar per serving, measured in grams, for both varieties to determine if there are significant differences in their nutritional profiles.

A.

Compare the distributions of sugar content for the sample of Variety X cereal and the sample of Variety Y cereal.

B.

For the distribution of sugar content for the sample of Variety Y cereal, would you expect the mean to be greater than 15 g, less than 15 g, or equal to 15 g? Justify your answer.

Figure 1. Sugar Content for Two Cereal Varieties (Horizontal Boxplots, grams per serving)

Figure 1
C.

Ms. Lin creates a new dataset by combining the data from the 50 servings of Variety X and the 50 servings of Variety Y.

i.

What is the range of the combined data set? Show your work.

ii.

What is a possible value of the median of the combined data set? Justify your answer by referencing the boxplots shown in Figure 1.

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FRQ Directions
Free Response Question Practice

This practice environment simulates the AP AP Statistics Free Response Questions section. Here are some guidelines:

  • Read each question carefullybefore responding. Pay attention to command verbs like "identify," "explain," "analyze," or "evaluate."
  • Use the timer to practice time management. You can pause, restart, or hide the timer as needed.
  • Mark for Review if you want to come back to a question later.
  • Your responses are saved automatically as you type. You can also use the drawing tool for questions that require diagrams or graphs.
  • Use the toolbar for formatting options like bold, italic, subscript, and superscript.
  • Navigate between questions using the Previous and Next buttons at the bottom of the screen.

Tip: Answer all parts of each question. Partial credit is often available, so even if you are unsure, provide what you know.