Calculate Variance with PythonCalculate Variance with Python

Calculating Variance with NumPy

In NumPy you need to put the sequence of values (in our case, the column of the dataset) into the function np.var() like np.var(df['work_year']).

Calculating Variance with pandas

In pandas you need to apply function .var() to the sequence of values (in our case the column of the dataset) like df['work_year'].var().

In two cases, the result is almost the same. The differences caused by different denumerators: N in NumPy, and N-1 in pandas. Check it now!

Everything was clear?

Section 3. Chapter 3