Below is a frequency table which has data for testing a theory that students who speak a foreign language are also strong mathematics students.
The question says to draw a graph showing conditional distribution of Math grade with the ability to speak a foreign language and give my conclusions. I computed the conditional distributions of Math grade for students who speak a foreign language and drew the below graph but it was marked incorrect.
I don not understand why this is incorrect. Do I need to draw a side-by side graph? Something like this?