cudf.DataFrame.std

DataFrame.std(axis=None, skipna=True, level=None, ddof=1, numeric_only=None, **kwargs)

Return sample standard deviation of the DataFrame.

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

Parameters

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

Axis for the function to be applied on.

skipna: bool, default True

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

ddof: int, default 1

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

Returns

Series

Notes

Parameters currently not supported are level and numeric_only

Examples

>>> import cudf
>>> df = cudf.DataFrame({'a': [1, 2, 3, 4], 'b': [7, 8, 9, 10]})
>>> df.std()
a    1.290994
b    1.290994
dtype: float64