quiz 11

Question 1

Which of the following best describes the purpose of the linear regression test?

Answer 1

Predict our outcome variable from an explanatory variable.

Question 2

Which of the following is NOT a piece of information needed to test any hypotheses about linear regression and to calculate effect sizes?

Answer 2

Distance from the observed score to the mean.

Distance from the observed score to the prediction line.

Distance from the prediction line to the mean.

Distance between deviation score and the group mean. (this is the incorrect answer).

Question 3

In linear regression, even if we cannot account for the variance in Y based on X, we can still use X to predict future values of Y, showing the versatility of the statistical analysis.

Answer 3

False

Question 4

What are the specific cutoffs or guidelines for how to interpret the standard error of the estimate which measures accuracy in prediction in linear regression?

Answer 4

There are no specific cutoffs or guidelines. Expert judgment should be used.

Question 5

What is used in linear regression to make predictions?

Answer 5

Line of best fit