AP Statistics - Bivariate Data

1

On a residual plot, the -axis displays the __________ and the -axis displays __________.

2

On a residual plot, the -axis displays the __________ and the -axis displays __________.

3

Which of the following correlation coefficients indicates the strongest relationship between variables?

4

Which of the following correlation coefficients indicates the strongest relationship between variables?

5

What transformation should be done to the data set, with its residual shown below, to linearize the data?

Graphic residual analysis 6

6

What transformation should be done to the data set, with its residual shown below, to linearize the data?

Graphic residual analysis 6

7

It is found that there is a correlation of exactly between two variables. Which of the following is incorrect?

8

A national study on cell phone use found the following correlations:

-The correlation between the number of texts sent each day and a person's average credit card debt is .

-The correlation between the number of texts sent each day and the number of books read each month is .

Which of the following statements are true?

i. As the number of texts sent each day increases, average credit card debt increases.

ii. Sending more texts causes people to read less.

iii. A person's average credit card debt is related more strongly to the number of texts sent each day than the number of books read each month is related to the number of texts sent each day.

9