作者swedrf0112 (M)
看板Statistics
标题[问题] F-test p-value
时间Wed Mar 12 23:22:41 2014
使用软体:R
x=c(-0.1407194,-0.7982697,-0.3224528,-0.3769573,-0.5077151,
-0.6598102,-0.7674484,-0.2467011,-0.5067770,-0.4163685)
y=(-0.60020992,-0.56500036,0.03297745,-0.32215334,-0.02114362,
-0.13862984,-0.74231297,-0.57976941,0.11806079,-0.62611322)
var.test(x,y)
######################
H0:sigma_x^2=sigma_y^2
TS=0.4682
p-value=0.2737
想请问他的p-value是怎麽算出来的
为什麽会是2*pf(TS,9,9)=0.2737 ?
谢谢~
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