Exercise

Replace missing values with the median value

Given is a basetable that has a predictive variable age of the donors that has missing values in it. It is a good idea to replace these missing values by the median age of the donors.

Instructions

100 XP

Calculate the median age of all donors and assign this value to median_age.
Replace missing values in age by median_age.
Calculate the median age of all donors after the replacement is done.