What does 1 - r^2 measure?

What does 1 - r^2 measure?

a. The relative importance of all other possible predictor variables on y.
b. The percentage of points that are on the regression line.
c. The percentage of points that are off the regression line



Answer: a. The relative importCorrelation and Regression Analysisance of all other possible predictor variables on y.

Which of the following statements is not correct regarding the correlation.

Which of the following statements is not correct regarding the correlation.

a. It can range from -1 to 1.
b. Its square is the percentage of variance accounted for.
c. It measures the percent of variation explained.
d. It is a measure of the association between two variables


Answer: c. It measures the percent of variation explained.

The primary purpose of a regression equation is to

The primary purpose of a regression equation is to

a. measure the association between two variables.
b. estimate the value of the dependent variable based on the independent variable.
c. estimate the value of the independent variable based on the dependent variable.
d. estimate the percentage of variance accounted for.


Answer: b. estimate the value of the dependent variable based on the independent variable.

The ratio of SS(Regression) divided by the SS(Total) is also called the

The ratio of SS(Regression) divided by the SS(Total) is also called the

a. sum of squares due to regression
b. percentage of variance accounted for
c. standard error
d. coefficient of correlation.


Answer: b. percentage of variance accounted for