Skip to main content
3 events
when toggle format what by license comment
Apr 5, 2016 at 12:13 comment added Henry Related: math.stackexchange.com/questions/103142/…
Apr 5, 2016 at 12:12 comment added Henry Hint: a random variable taking the values $\pm1$ each with probability $\frac12$ has mean $0$ and variance $1$.
Apr 5, 2016 at 11:59 history asked rndflas CC BY-SA 3.0