Imputation of missing values

Why we need imputation?

Whenever we start working on any dataset there is always some cleaning, treating missing values activities are required.

Methods to treat missing values

1) Replacing the missing value by mean, mode, median depending on the data

2) Imputing the missing value by some constant that aligns with data or business sense

3) Use regression techniques such as KNN (K- Nearest Neighbors)

4) Remove the specific rows and columns

5) Do nothing