This one took me a long time to figure out how to do it, but finally here it is!
The way that I learned how to use arrays, first: I asked to Ken, then I searched in lynda.com whichever that you take it helps a lot!
The most difficult part to me was that I needed to remember how to use the standard deviation, I didn't know how to translate the formula to code, and after do some drawings on my notebook I found it. And also, how to print the list of the numbers after ask it to user. Into my code are some comments that help me to remember what does each part of loop.
The only thing that I think I'm missing is the way to programm. The teacher is always telling us that we need to use functions and into "main" we only need to call those functions.
Here's my code running and the link to GitHub.