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AP Statistics Flashcards: Slope Of A Regression Model Test

Study Slope Of A Regression Model Test in AP Statistics with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Find the degrees of freedom for a slope test when the sample size is n=18n = 18.

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ANSWER

df=16df = 16. df=18−2=16df = 18 - 2 = 16 for simple linear regression.

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AP Statistics: Inference for Quantitative Data: Slopes

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This deck focuses on Slope Of A Regression Model Test, giving you a quick way to review the definitions, rules, and examples that matter most for AP Statistics.

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Practice questions

1 of 38Practice questions for this set
A researcher examines whether daily screen time (xx, hours) predicts number of hours slept (yy) for 40 randomly selected adults. A regression of sleep on screen time is fit, and a slope test is carried out with H0:β1=0H_0: \beta_1=0 versus Ha:β1≠0H_a: \beta_1\neq 0. The output reports a two-sided p-value of 0.003. At α=0.01\alpha=0.01, the researcher rejects H0H_0. What conclusion is appropriate?
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