pandas.DataFrame.sem

DataFrame.sem(axis=None, skipna=True, level=None, ddof=1, numeric_only=None, **kwargs)[source]

Return unbiased standard error of the mean over requested axis.

Normalized by N-1 by default. This can be changed using the ddof argument

Parameters

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

For Series this parameter is unused and defaults to 0.

skipna:bool, default True

Exclude NA/null values. If an entire row/column is NA, the result will be NA.

level:int or level name, default None

If the axis is a MultiIndex (hierarchical), count along a particular level, collapsing into a Series.

Deprecated since version 1.3.0: The level keyword is deprecated. Use groupby instead.

ddof:int, default 1

Delta Degrees of Freedom. The divisor used in calculations is N - ddof, where N represents the number of elements.

numeric_only:bool, default None

Include only float, int, boolean columns. If None, will attempt to use everything, then use only numeric data. Not implemented for Series.

Deprecated since version 1.5.0: Specifying numeric_only=None is deprecated. The default value will be False in a future version of pandas.

Returns

Series or DataFrame (if level specified)