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.
Find the standard deviation: 6, 5, 9, 13, 18, 7, 5, 20, 11, 15
Find the standard deviation: 6, 5, 9, 13, 18, 7, 5, 20, 11, 15
Natural Language
Math Input
Extended Keyboard
