Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
show sqrt((t - s**2 / n) / n) = sqrt( t / n - (s / n)**2)
show sqrt((t - s**2 / n) / n) = sqrt( t / n - (s / n)**2)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
