A graduate program wants to determine if first year graduate student GPA, y, is linearly related to score on the quantitative section of the GRE, x, (Graduate Record Examinations).

Data was collected from 15 randomly selected graduate students. Scores on the quantitative section of the GRE ranged from 480 to 720.

1)The correlation between score and first year GPA is 0.529.

What is the critical value for the testing if the correlation is significant at=.05?

2)To determine if the correlation is significant, what rule is used?

a)correlation is significant if r>.05

b)correlation is significant if r<.05

c)correlation is significant if |r| < critical value

d)correlation is significant if |r| > critical value

3) Is the correlation significant?

a)No, quantitative GRE score can't be used to estimate first year GPA

b)Yes, quantitative GRE score can be used to estimate first year GPA

4) The slope of the regression equation to predict first year GPA from quantitative GRE score is 0.00401, and the y-intercept is 0.88929. Select the regression equation.

a)y^=0.00401x+0.88929

b)y=0.00401x+0.88929

c)y=0.88929x+0.00401

d)y^=0.88929x+0.00401

5) Describe the relationship between quantitative GRE score and first year GPA.

a)As quantitative GRE score increases, first year GPA also tends to increase.

b)As quantitative GRE score increases, first year GPA tends to decrease.

c)GPA and quantitative GRE are not correlated.

d)The higher the GPA, the lower the quantitative GRE score.

e)A higher GPA causes a student to have a higher quantitative GRE score.

6) For each of the quantitative GRE scores, use the regression equation to predict the student's first year GPA.

Type either anumerical valueornot appropriate.

Round final answer to two decimal places.

a)400:

b)500:

c)600:

7) Which of the correlation values represent a perfect linear relationship between x and y?

a) -1

b) .05

c) 1

d) 0

e) 100

8) Match the correlation coefficient to its variable.

a) population correlation

Choose: R (Greek alpha) c (Greek rho) r

b) sample correlation

Choose: R (Greek alpha) c (Greek rho) r