Dear R-User,
I met the problem to test equality of variance.
Two sample units:
conjps<-c(9.41,10.45,10.78,10.73,11.11,11.12,11.59,11.04,11.63)
ms<-c(4.11,5.10,5.70,6.46,6.04,6.16, 6.24,6.32,7.33)
Then I use the F test to test:
•Test Equality
of
Two Variances
F
test to compare two variances
data:
conjps and ms
F = 0.5419, num df = 8,
denom df = 8,
p-value = 0.4045
alternative hypothesis: true ratio of
variances is not equal to 1
95 percent confidence interval:
0.1222368 2.4024170
sample estimates:
ratio of variances
0.5419076
but If conjps is replaced by conjps1: shifting the first value and the last
value position
conjps1<-c(11.36,10.45,10.78,10.73,11.11,11.12,11.59,11.04,9.41)
I do believe we get the same result when testing the equity of variance. but
how do I distringuish this two cases by testing?
Kind regards,Tammy
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