t检验的样本量计算
对于t检验,可以使用pwr.t.test(n= , d= , sig.level= , power= , type= , alternative= )计算样本量,其中:
n:样本量...sig.level:显著性水平,默认值0.05
power:功效
type:检验类型:两样本t检验(two.sample),单样本t检验(one.sample),配对t检验(paired),默认两样本t检验
alternative...sig.level = 0.05,
power = 1-0.1,
type = "one.sample",
alternative...sig.level = 0.05,
power = 1 - 0.1,
type = "two.sample",
alternative...pwr.r.test(r=0.8,
sig.level = 0.05,
power = 1-0.1,
alternative = "two.sided