AP Statistics Inference for the Slope of a Regression Line Quiz: 10 Questions with Explanations

AP Statistics math quiz: Inference for the Slope of a Regression Line – Maths PDF

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This inference slope quiz for AP Statistics covers inference for the slope of a regression line (Common Core AP STAT 9.1, AP STAT 9.2, AP STAT 9.3, AP STAT 9.4, AP STAT 9.5, AP STAT 9.6, HSS-ID.B.6), with a free PDF to print.

Ten multiple-choice questions test the conditions, the degrees of freedom, and reading regression output. Read each explanation carefully before continuing.

AP Statistics · Common Core State Standards: AP STAT 9.1, AP STAT 9.2, AP STAT 9.3, AP STAT 9.4, AP STAT 9.5, AP STAT 9.6, HSS-ID.B.6

Inference slope quiz: 10 questions

Question 1

Regression output.

What is the standard error of the slope in this output?

Question 2

No pattern in the residuals and roughly constant spread: a linear model is appropriate.

This residual plot supports which condition?

Question 3

Two-sided p-value.

The two-sided p-value is closest to:

Question 4

The degrees of freedom for a t procedure for a slope with n = 20 are:

Question 5

A 95% interval for beta is (0.4, 1.2). Which is correct?

Question 6

In the LINER conditions, ‘E’ stands for:

Question 7

A researcher wants to test whether a linear relationship exists. The null hypothesis is:

Question 8

A two-sided P value of 0.08 from the output. For Ha: beta > 0 with a positive slope, the p-value is:

Question 9

The SE of the slope is 0.5 and b = 2. The t statistic for H0: beta = 0 is:

Question 10

A curved pattern in the residual plot means:

Remember

Parameter: true slope beta; statistic: sample slope b; df = n – 2.
Interval: b +/- t* SE_b; test: t = (b – 0)/SE_b for H0: beta = 0.
LINER: Linear, Independent, Normal residuals, Equal variance, Random.
Computer output gives b, SE_b, t, and the two-sided P in the row for the explanatory variable.
If the interval contains 0, there is no convincing evidence of a linear relationship.

How to use this inference slope quiz

Answer each question, read the explanation that appears, and keep track of your score. A score of 8 out of 10 or more means you are ready for the test.

Download the inference slope quiz as a PDF with the button below and keep it with your notes.

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