AP Statistics Flashcards: Mean And Standard Deviation

Study Mean And Standard Deviation in AP Statistics with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Identify the standard deviation of a Poisson random variable with rate $\text{lambda}$ .

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ANSWER

Standard deviation is $\text{sqrt(lambda)}$ . Poisson standard deviation is square root of rate parameter.

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What this deck covers

This deck focuses on Mean And Standard Deviation, giving you a quick way to review the definitions, rules, and examples that matter most for AP Statistics.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 50Practice questions for this set

A discrete random variable

Q

represents the number of questions a student answers correctly on a 12-question quiz. The distribution of

Q

has mean

\mu_Q=8.9

and standard deviation

\sigma_Q=1.4

. Which interpretation of the standard deviation is correct?

Choose an answer

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