개요
- R 공분산 cov()
- "Covariance"
x <- c(9, 10, 8, 5, 8)
y <- c(8, 10, 9, 4, 6)
cov(x,y) ## [1] 4
x <- c(1, 1, 1, 2, 2, 2)
y <- c(1, 2, 3, 1, 2, 3)
cov(x,y) ## [1] 0
x <- c(1, 2, 2, 3, 4, 5, 6, 8, 9, 10)
y <- c(2, 3, 2, 5, 5, 7, 5, 6, 7, 8)
cov(x,y) ## [1] 5.888889