Exercise $-$ on your own $($EX $8)$

Create a new Notebook from your template Notebook and name it as you have for previous exercises. Write the well$-$commented code to solve the following problems. Submit your Notebook file at the appropriate link in Bb for credit.

using pandas

notebook

This exercise incorporates concepts from both data assembly and missing data.

Combine the two data files $($assess$\_$Fa$20.$csv and assess$\_$Su$20.$csv$)$ into one dataframe. Be sure to reset the index.

Replace any missing values with the mean of its column.

Save the resulting dataframe in a csv file named 'assess$\_2020.$csv$\text{'}.$ Where should you save it$?$