R t검정

1 개요

R t.test()

2 1표본 t검정

(x <- c(1:10))
##  [1]  1  2  3  4  5  6  7  8  9 10
t.test(x)
## 
## 	One Sample t-test
## 
## data:  x
## t = 5.7446, df = 9, p-value = 0.0002782
## alternative hypothesis: true mean is not equal to 0
## 95 percent confidence interval:
##  3.334149 7.665851
## sample estimates:
## mean of x 
##       5.5

3 2표본 t검정

(a <- c(1:10))
##  [1]  1  2  3  4  5  6  7  8  9 10
(b <- c(5:20))
##  [1]  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20
t.test(a, y=b)
## 
## 	Welch Two Sample t-test
## 
## data:  a and b
## t = -4.5826, df = 23.967, p-value = 0.0001204
## alternative hypothesis: true difference in means is not equal to 0
## 95 percent confidence interval:
##  -10.152884  -3.847116
## sample estimates:
## mean of x mean of y 
##       5.5      12.5

4 같이 보기

• R prop.test()
• R chisq.test()
• t-검정

5 참고

• https://www.rdocumentation.org/packages/stats/versions/3.6.0/topics/t.test