Machine Learning 1

import matplotlib library as plt for plotting

How to find the number of rows and columns in the data df?

How to describe the data it's count, mean, min and max?

How do you find the sum of null values?

How do you fill the null values?

How do you remove the columns in a data(df)?

What is the full form of sklearn?

How do you train the model where lr = LinearRegression()?

import a library which is used to save the machine learning model?

How do you load a machine learning model?