pyspark.pandas.Series.cov

Series.cov(other: pyspark.pandas.series.Series, min_periods: Optional[int] = None, ddof: int = 1) → float

Compute covariance with Series, excluding missing values.

New in version 3.3.0.

Parameters

otherSeries

Series with which to compute the covariance.

min_periodsint, optional

Minimum number of observations needed to have a valid result.

ddofint, default 1

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

New in version 3.4.0.

Returns

float

Covariance between Series and other

Examples

>>> from pyspark.pandas.config import set_option, reset_option
>>> s1 = ps.Series([0.90010907, 0.13484424, 0.62036035])
>>> s2 = ps.Series([0.12528585, 0.26962463, 0.51111198])
>>> with ps.option_context("compute.ops_on_diff_frames", True):
...     s1.cov(s2)
-0.016857...
>>> with ps.option_context("compute.ops_on_diff_frames", True):
...     s1.cov(s2, ddof=2)
-0.033715...

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