Question
Using the following information make a prediction fro y, given an x score of 8 Variable X: M=12, SD= 3 variable Y: M=74, SD= 18
Using the following information make a prediction fro y, given an x score of 8
Variable X: M=12, SD= 3
variable Y: M=74, SD= 18
Pearson correlation of variable x and y = 0.46
a. transform the raw score for the independent variable to a z score.
b. calculate the predicted z score for the dependent variable.
c.Transform the z score for the dependent variable back into a raw score.
d. calculate the y intercept, a.
e. calculate the slope, b.
f. write the equation for the line.
g. Draw the line on an empty scatterplot, basing the line on predicted y values for x values of 0, 1 and 18
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