>>251
動作しないとは具体的にどういうこと？
> HSD.test(amod, "tx", group=TRUE, console = TRUE)

Study: amod ~ "tx"

HSD Test for yield

Mean Square Error: 24.93463

tx, means

yield std r Min Max
1.0 36.91257 5.335857 20 25.54710 46.60105
[snip]
5.1 44.55313 4.663802 20 31.20605 51.55704

alpha: 0.05 ; Df Error: 190
Critical Value of Studentized Range: 4.527912

Honestly Significant Difference: 5.055736

Means with the same letter are not significantly different.

Groups, Treatments and means
a 2.1 51.18
ab 4.1 50.75
[snip]