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.
StandarDeviation[0.8525, 0.81, 0.8575, 0.84, 0.9575]
StandarDeviation[0.8525, 0.81, 0.8575, 0.84, 0.9575]
Natural Language
Math Input
Extended Keyboard