college psyc. statistic
posted by Thomas on .
A psychology student wanted to examine the value of predicting GPAs based on IQ scores. She recruited undergraduate students enrolled in an introductory psychology class and administered the IQ test (M = 100.260, SD = 12.985) and requested their GPAs from the registrarâ€™s office (M = 2.456, SD = .861). Consistent with many previous reports, the student found that IQ was significantly correlated with GPA, r(86) = .497, p < .001.
Find a) sYŶ. , b) covXY., and c) the equation for the regression line. Round to three decimal places.

Final Part of the problem:
Find a) sYŶ. , b) covXY., and c) the equation for the regression line. Round to three decimal places.