Math problem help. Regression equation

I need help with this question.


Which of the following are needed to calculate a regression equation if all are given to you? Mark all that apply.

Question options:

1. standard deviation of the predictor (x)


2. correlation coefficient (r)


3. standard deviation of the outcome (y)


4. z-score of the outcome (y)


5. mean of the predictor (x)


6. z-score of the predictor (x)


7. mean of the outcome (y)

The regression equation is : y = bx + a

b is the slope = r Sy/Sx ( r, standard deviation of x , standard deviation of y)

a= mean of outcome y - b x mean of outcome x

You do not need
4. z-score of the outcome (y)
6. z-score of the predictor (x)

You need all of the others.