1.The "regression coefficient" is:

a. the number multiplied by a person's score on the criterion variable as part of a linear prediction rule

b. the number multiplied by a person's score on the predictor variable as part of a linear prediction rule

c.also known as the regression constant

d.the inverse of the correlation coefficient

2.( FILL IN THE BLANK) A social psychologist reports that an infant's age in months predicts appetite level. In the regression equation (linear prediction rule), a = 15 and b = 5. If an infant is 1 months old, what is the predicted appetite level? __________________

3. You want to predict a dog's fur color from the fur color of its father. The fur color of its father is the:

a.criterion variable

b.causal variable

c,predictor variable

d.independent variable

4. Which of the following statements is false?

a.The slope of the regression line is also called the regression coefficient

b.The slope of the regression line is also called the regression constant

5. The correlation coefficient is most directly related to:

a.the slope of the regression line

b.the mean of Y

c.the mean of X

d.the regression constant

6.A "regression constant" is a particular fixed number added into the prediction in a linear regression equation.

a.True

b.False

7. (FILL IN THE BLANK) A cognitive psychologist conducts a study of whether familiarity of words predicts the time it takes to press a button indicating whether the word is singular or plural. All participants are given the same words. Familiarity with these was related at a later time on a 10-point scale (higher = more familiar). Below are the scores for the first three participants.

	Familiarity	Reaction Time
Person Tested	X	Y
A	10	1.86
B	5	1.58
C	8	1.3

What is the correct value of "b" in the linear regression equation?________

8.Which of the following is a true statement about a regression line?

a.The line is drawn on a graph in which the vertical axis is for the predictor variable scores

b.It is able to show relation between values of the predictor variable and the predicted values of the criterion variable

c.It is always a curved line

9.(FILL IN THE BLANK) You have figured the "regression coefficient" to be 7.67; the mean of the "predictor variable" is 4.46, and the mean of the "criterion variable" is 8.72. What is the "regression constant"? Round to two decimal places when answering this question. _______

10. ( FILL IN THE BLANK) A cognitive psychologist conducts a study of whether familiarity of words predicts the time it takes to press a button indicating whether the word is singular or plural. All participants are given the same words. Familiarity with these was related at a later time on a 10-point scale (higher = more familiar). Below are the scores for the first three participants.

	Familiarity	Reaction Time
Person Tested	X	Y
A	5	1.47
B	5	1.3
C	9	1.83

What is the correct value for "a" in the linear regression equation?_______

11. When making a prediction using a linear regression equation (linear prediction rule), each participant's "predicted score" is the "regression constant," plus the _____________ times his or her score on the "predictor variable."

a.mean of Y

b.y-intercept

c.regression constant

d.regression coefficient

12.A social psychologist is studying whether the amount of people in your class predicts whether you will attend class. The amount of people in your class is the _________ variable; whether you will attend class is the _________ variable.

a.criterion; predictor

b.dependent; independent

c .predictor; criterion

d.constant; coefficient

13. (FILL IN THE BLANK) In a regression equation (linear prediction rule), the "predicted score" for a person with a "predictor variable" score of 0 is 2. In this scenario, what is the "regression constant"? ______

14. ( fill in the blank ) A cognitive psychologist conducts a study of whether familiarity of words predicts the time it takes to press a button indicating whether the word is singular or plural. All participants are given the same words. Familiarity with these was related at a later time on a 10-point scale (higher = more familiar). Below are the scores for the first three participants.

	Familiarity	Reaction Time
Person Tested	X	Y
A	5	1.4
B	3	1.74
C	2	1.81

What is the correlation between "familiarity with words" and "reaction time"? ________

15. ( FILL IN THE BLANK) In a regression equation (linear prediction rule), the value of a is 63 and the value of b is 15. An individual has a score of 38 on X. The person's predicted score on Y is: _______