Regression

Regression analysis is often used _______________________.

to predict scores

The standardized regression coefficient beta (β) in a single predictor linear regression model equals… 

the correlation coefficient.

The statistical procedure used to predict students’ statistics final grades based on their attendance, GPA, and math prerequisite grade is…

multiple regression.

Check all that apply. In a regression equation, the regression intercept is equivalent to _______________________.

the Y-intercept and the value of Y at X = 0

In a regression analysis with one predictor, β is the equivalent of _______________________.

the correlation between X and Y

Consider the regression equation predicting Y from bX + a

In other words, Y = bX + a

Y is the _______________________.

outcome variable

Consider the regression equation predicting Y from bX + a

In other words, Y = bX + a

X is the _______________________.

predictor variable

Consider the regression equation predicting Y from bX + a

In other words, Y = bX + a

b is the _______________________.

regression coefficient

Consider the regression equation predicting Y from bX + a

In other words, Y = bX + a

a is the _______________________.

regression intercept

The next set of questions refer to the regression equation below:

Y = -1.30X + 5.18

-1.30 is _______________________.

the regression coefficient

The next set of questions refer to the regression equation below:

Y = -1.30X + 5.18

5.18 is _______________________.

the regression intercept

The next set of questions refer to the regression equation below:

Y = -1.30X + 5.18

What is the expected value of Y for someone with a score of X = 6?

(two decimal places)

-2.62

The next set of questions refer to the regression equation below:

Y = -1.30X + 5.18

If a counseling psychologist wants to predict college grades from high school grades, college grades are the…

outcome variable

The next set of questions refer to the regression equation below:

Y = -1.30X + 5.18

A multiple regression equation with two predictor variables produces R² = 0.10.  What percent of the variance for the Y scores is predicted by the equation?

10

The next set of questions refer to the regression equation below:

Y = -1.30X + 5.18

If a child psychologist reports that age in months predicts appetite level for a group of infants using a linear regression in which a = 1 and b = 2, the expected appetite level for a four-month-old infant is…

9.00