[預(yù)防醫(yī)學(xué)]通過(guò)對(duì)10名20歲男青年身高(㎝)與前臂與(㎝)研究:求出離均差平方和∑(
選項(xiàng):IMG style="WIDTH: 52px; HEIGHT: 44px" height=37 alt="" src="http://m.serviciosjt.com/UpFile/2006070317283452137.gif" width=52 align=absMiddle> )2=962.5
∑( )2=78.4;離均差積和∑( )( )=226。相關(guān)系數(shù)的值為:
A. r=0.8227
B. r=0.8127
C. r=0.9562
D. r=0.7489
E. r=0.8331
答案:
A