Let's have a data set, e.g.:
我们有一个数据集,例如:
set.seed(123)
n <- 50
x <- sample(c(0, 1), replace = TRUE, size = n)
y <- sample(c(1, 2), replace = TRUE, size = n)
sLet's have a data set, e.g.:
我们有一个数据集,例如:
set.seed(123)
n <- 50
x <- sample(c(0, 1), replace = TRUE, size = n)
y <- sample(c(1, 2), replace = TRUE, size = n)
s