14. True/false: If the slope of a simple linear regression line is statistically

Question

14. True/false: If the slope of a simple linear regression line is statistically significant, then the correlation will also always be significant.

15. True/false: If the slope of the relationship between X an Y is larger for

Population 1 than for Population 2, the correlation will necessarily be larger in

Population 1 than in Population 2.

16. True/False: If the correlation is .8, then 40% of the variance is explained.

17. True/false: If the actual Y score was 31, but the predicted score was 28, then the error of prediction is 3.

Explanation / Answer

14. True/false: If the slope of a simple linear regression line is statistically significant, then the correlation will also always be significant. [TRUE]

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15. True/false: If the slope of the relationship between X an Y is larger for Population 1 than for Population 2, the correlation will necessarily be larger in Population 1 than in Population 2. [FALSE]

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16. True/False: If the correlation is .8, then 40% of the variance is explained. [FALSE. 0.8^2 = 64% is explained]

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17. True/false: If the actual Y score was 31, but the predicted score was 28, then the error of prediction is 3. [TRUE]

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