Exercise

Confirming house ads error

Now that you've created a DataFrame that checks whether users see ads in the correct language let's calculate what percentage of users were not being served ads in the right language and plot your results.

Instructions

100 XP

Add a pct column to language_check_df which divides the count where language is correct by the row sum extracted using the .sum() method.
Make a line plot with the date as the x-axis and the pct column as the y-axis and show your results.