検定

ansari.test, bartlett.test, binom.test, Box.test, chisq.test, cor.test, fisher.test,
fligner.test, friedman.test, kruskal.test, ks.test, mantelhaen.test, mauchly.test,
mcnemar.test, mood.test, oneway.test, pairwise.prop.test, pairwise.t.test,
pairwise.wilcox.test, poisson.test, power.anova.test, power.prop.test, power.t.test,
PP.test, prop.test, prop.trend.test, quade.test, shapiro.test, t.test, var.test,
wilcox.test

# t検定
x <- 1:20
y <- 5:25
z <-t.test(x, y, var.equal = TRUE)

値の参照について

# t値はstatisticで参照可能
z$statistic

##         t 
## -2.374387

# p値はp.valueで参照可能
z$p.value

## [1] 0.02259506

# 95%信頼区間値はconf.intで参照可能
z$conf.int

## [1] -8.3334558 -0.6665442
## attr(,"conf.level")
## [1] 0.95