pandas.Series.mode#

Series.mode(dropna=True)[source]#

Return the mode(s) of the Series.

The mode is the value that appears most often. There can be multiple modes.

Always returns Series even if only one value is returned.

Parameters:

dropnabool, default True: Don’t consider counts of NaN/NaT.

Returns:

Series: Modes of the Series in sorted order.

See also

numpy.mode: Equivalent numpy function for computing median.
Series.sum: Sum of the values.
Series.median: Median of the values.
Series.std: Standard deviation of the values.
Series.var: Variance of the values.
Series.min: Minimum value.
Series.max: Maximum value.

Examples

>>> s = pd.Series([2, 4, 2, 2, 4, None])
>>> s.mode()
0    2.0
dtype: float64

More than one mode:

>>> s = pd.Series([2, 4, 8, 2, 4, None])
>>> s.mode()
0    2.0
1    4.0
dtype: float64

With and without considering null value:

>>> s = pd.Series([2, 4, None, None, 4, None])
>>> s.mode(dropna=False)
0   NaN
dtype: float64
>>> s = pd.Series([2, 4, None, None, 4, None])
>>> s.mode()
0    4.0
dtype: float64