pandas.DataFrame.skew#

DataFrame.skew(axis=0, skipna=True, numeric_only=False, **kwargs)[source] #

Return unbiased skew over requested axis.

Normalized by N-1.

Parameters:

axis{index (0), columns (1)}

Axis for the function to be applied on. For Series this parameter is unused and defaults to 0.

For DataFrames, specifying axis=None will apply the aggregation across both axes.

Added in version 2.0.0.

skipnabool, default True

Exclude NA/null values when computing the result.

numeric_onlybool, default False

Include only float, int, boolean columns. Not implemented for Series.

**kwargs

Additional keyword arguments to be passed to the function.

Returns:

Series or scalar

Examples

>>> s = pd.Series([1, 2, 3])
>>> s.skew()
0.0

With a DataFrame

>>> df = pd.DataFrame({'a': [1, 2, 3], 'b': [2, 3, 4], 'c': [1, 3, 5]},
...  index=['tiger', 'zebra', 'cow'])
>>> df
 a b c
tiger 1 2 1
zebra 2 3 3
cow 3 4 5
>>> df.skew()
a 0.0
b 0.0
c 0.0
dtype: float64

Using axis=1

>>> df.skew(axis=1)
tiger 1.732051
zebra -1.732051
cow 0.000000
dtype: float64

In this case, numeric_only should be set to True to avoid getting an error.

>>> df = pd.DataFrame({'a': [1, 2, 3], 'b': ['T', 'Z', 'X']},
...  index=['tiger', 'zebra', 'cow'])
>>> df.skew(numeric_only=True)
a 0.0
dtype: float64