R colMeans()

1 개요

R colMeans()

• Form Column Means

mydf <- read.table( header=TRUE, stringsAsFactors=FALSE, text="
English Math
     30   60
     40   70
     50   80
     60   90
")
mydf
##   English Math
## 1      30   60
## 2      40   70
## 3      50   80
## 4      60   90

colMeans(mydf)
## English    Math 
##      45      75 

sapply(mydf, mean)
## English    Math 
##      45      75 

apply(mydf, 2, mean)
## English    Math 
##      45      75

2 같이 보기

• R mean()
• R apply()
• R sapply()
• R colSums()
• R rowMeans()

3 참고

• https://www.rdocumentation.org/packages/base/versions/3.6.1/topics/colSums