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May 25, 2015

Homework Help: college psyc. statistic

Posted by Thomas on Sunday, November 2, 2008 at 6:54pm.

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 registrarís 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) sY-Ŷ. , b) covXY., and c) the equation for the regression line. Round to three decimal places.

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