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Add note about different series lengths to Series.corr and Series.cov docs #47145

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May 27, 2022
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4 changes: 4 additions & 0 deletions pandas/core/series.py
Original file line number Diff line number Diff line change
Expand Up @@ -2541,6 +2541,8 @@ def quantile(self, q=0.5, interpolation="linear"):
def corr(self, other, method="pearson", min_periods=None) -> float:
"""
Compute correlation with `other` Series, excluding missing values.
The two `Series` objects are not required to be the same length and will be
aligned internally before the correlation function is applied.

Parameters
----------
Expand Down Expand Up @@ -2613,6 +2615,8 @@ def cov(
) -> float:
"""
Compute covariance with Series, excluding missing values.
The two `Series` objects are not required to be the same length and
will be aligned internally before the covariance is calculated.

Parameters
----------
Expand Down