making programs for college with hp prime

[Obsidianknight]

I'm in a college elementary stats class, and I want to make an app for my hp prime that can find the percentiles for me after I provide a data set. I preferable want to be able to open the app and have a text saying " please provide data set" and once I do have it ask " please provide desired percentile" and after I do it'll calculate the percentile asked using the data set.
does anyone have resources where I can learn to code this for the prime or any suggestions?