Log inSign up

AP Statistics Flashcards: Linear Regression Models

Study Linear Regression Models in AP Statistics with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What is the formula for calculating the correlation coefficient rr?

Tap card or press Space to flip

ANSWER

r=cov(X,Y)std(X)×std(Y)r = \frac{\text{cov}(X, Y)}{\text{std}(X) \times \text{std}(Y)}. Covariance divided by product of standard deviations.

1 / 35

AP Statistics: Exploring Two-Variable Data

You are hereLinear Regression Models35 cards

All flashcards

35 cards

What this deck covers

This deck focuses on Linear Regression Models, 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 40Practice questions for this set
A streaming service sampled 20 users and recorded age (xx, years, from 13 to 62) and average hours streamed per week (yy). A scatterplot with the least-squares regression line is shown, with fitted equation y^=18.0−0.15x\hat{y}=18.0-0.15x. The purpose of the linear model is to describe the linear association and predict typical weekly streaming time from age within the observed range. Which interpretation of the model is correct?
Choose an answer

Keep your progress across every deck

Free account · cards you mark are saved to it