Differences

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--- variance:ro2 [2026/03/10 23:15] – created hkimscil
+++ variance:ro2 [2026/03/10 23:29] (current) – removed hkimscil
@@ Line 1: / Line 1: @@
-<code>
-> rnorm2 <- function(n,mean,sd) { mean+sd*scale(rnorm(n)) }
-> set.seed(1)
-> a <- rnorm2(100000000, 100, 10)
-> a.mean <- mean(a)
-> ss <- sum((a-a.mean)^2)
-> n <- length(a)
-> df <- n-1
-> ss/n
-[1] 100
-> ss/df
-[1] 100
-</code>