pandas.core.resample.Resampler.mean — pandas 0.25.3 documentation (original) (raw)

Resampler. mean(self, _method='mean', *args, **kwargs)[source]¶

Compute mean of groups, excluding missing values.

See also

Series.groupby

DataFrame.groupby

Examples

df = pd.DataFrame({'A': [1, 1, 2, 1, 2], ... 'B': [np.nan, 2, 3, 4, 5], ... 'C': [1, 2, 1, 1, 2]}, columns=['A', 'B', 'C'])

Groupby one column and return the mean of the remaining columns in each group.

df.groupby('A').mean() B C A 1 3.0 1.333333 2 4.0 1.500000

Groupby two columns and return the mean of the remaining column.

df.groupby(['A', 'B']).mean() C A B 1 2.0 2 4.0 1 2 3.0 1 5.0 2

Groupby one column and return the mean of only particular column in the group.

df.groupby('A')['B'].mean() A 1 3.0 2 4.0 Name: B, dtype: float64