Add Custom Error for Box Plots w/Insufficient Data

[GeorgeBerdovskiy]

Background

When the user passes a data set with only one point to the box_plot helper, they will see a strange error regarding operations on nil values. This is caused by logic, which assumes there are two or more data points. If the user only has one point (or none), they should see a custom error that says so.

Goal

Modify the box_plot helper to show a helpful error message when the data argument is empty or has only one point inside of it. Good luck!

[ReehalS]

Ill Work on this

[suhanishokeen]

I'll work on this too

[GeorgeBerdovskiy]

Hey @suhanishokeen, did you agree to work on this together with @ReehalS? You may remember that once someone claims an issue, they can work on it for two weeks before others can give it a shot.

[GeorgeBerdovskiy]

Update - since two weeks have expired, this issue is now free to claim again! Several contributors can claim at once, and the "best" PR will be merged (although we may use elements from multiple contributors if it's helpful).

[ReehalS]

Ill reclaim this, but other people are free to work on this as well