Question
For constants a and b , X and Y are random variables. Please prove that Cov( X,Y )= E ( XY ) X Y (1)
For constantsaandb, X and Y are random variables. Please prove that
Cov(X,Y)=E(XY)XY (1)
Cov(aX+b,cY+d)=acCov(X,Y) IfXandYareuncorrelated,howaboutyourresults?
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The Economics of Women Men and Work
Authors: Francine D. Blau, Marianne A. Ferber, Anne E. Winkler
7th edition
978-0190670863, 019067086X, 132992817, 978-0132992817
