Hi, it is a good plot. Honest constructive feedback: The aesthetics could be made slightly better, layout be polished somewhat (yes even with Excel a lot btw). E.g. maybe contract the x-axis somewhat etc. But overall it is a completely logical and good idea to plot and also clearly understandable. In economics, scientists are literally interested seeing the exact impact variable x has on variable y (sometimes termed elasticity when measured as % over %). Also plotting the variables against each other like this may be called a "phase portrait", for everyone asking why to do it this way. Keep going!

Well done.

It’s called jitter. It’s just random displacement of the points so they don’t all overlap.

This graph is very nice. The only odd thing is that the vertical axis appears twice.