1. Which of the following pairs of variables should produce a correlation near 0?

A) model year (2003, 2004, etc.) and price for a used Honda

B) driving distance from college and weekly cost of gas for a group of commuting college students

C) number of hours studying and number of errors on a math exam

D) IQ and weight for a group of third-grade students

2. A scatterplot shows a set of data points that are clustered close to a line that slopes down to the right. Which of the following values would be closest to the correlation for these data?

A) 0.80

B) 0.40

C) 0.40-

D) 0.80-

3. In a chi-square test for goodness of fit, the null hypothesis is used to create an ideal, hypothetical sample. The frequencies in the ideal sample are called ____.

A) expected frequencies

B) theoretical frequencies

C) observed frequencies

D) null frequencies

4. A linear regression equation has b = 2 and a = 3. What is the predicted value of Y for X = 8?

A) 5

B) 19

C) 26

D) cannot be determined without additional information

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