Asked by Linda

How can predictions be made from correlations?

Answers

Answered by MathGuru
Yes, predictions can be made from correlations. For example, one can find predicted values via this formula using correlation:

predicted y = (rSy/Sx)X - (rSy/Sx)xbar + ybar
...where r = correlation, Sy = sd of y, Sx = sd of x, and X is the variable.
Also: xbar = mean of x; ybar = mean of y.

I hope this helps.
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