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.
standard deviation 10,30,40,80,20,50,90,110
standard deviation 10,30,40,80,20,50,90,110
Natural Language
Math Input
Extended Keyboard
