3. a set of n = 18 pairs of scores (x and y values) has ssx = 20, ssy = 80, and sp = 10. if the mean for the x values is mx = 8 and the mean for the y values is my = 10. a. calculate the pearson correlation for the scores. b. find the regression equation for predicting y from the x values. gravetter, frederick j. statistics for the behavioral sciences (p. 556). cengage learning. kindle edition.

a. Pearson Correlation

r=  or 0,25

b. The regression equation is

Step-by-step explanation:

a. Pearson Correlation

Using the equation for Pearson correlation:

b. Regression

Using regression equation

1.  

2.

3.

So replacing first 'b' because is content in 'a' equation

Knowing 'b' can know 'a' and complete the equation

Replacing in the equation 1:

1.  

1,918

step-by-step explanation:

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )