From bb5e41efdbe227c7ad9b32a259f79404bab42d5c Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Fri, 1 May 2026 22:58:23 -0500 Subject: [PATCH] gh-149244 Document statistics functions that require sequence inputs. (gh-149264) --- Doc/library/statistics.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Doc/library/statistics.rst b/Doc/library/statistics.rst index cbb131855dc..dba0e26787d 100644 --- a/Doc/library/statistics.rst +++ b/Doc/library/statistics.rst @@ -713,7 +713,7 @@ However, for reading convenience, most of the examples show sorted sequences. .. function:: covariance(x, y, /) - Return the sample covariance of two inputs *x* and *y*. Covariance + Return the sample covariance of two sequence inputs *x* and *y*. Covariance is a measure of the joint variability of two inputs. Both inputs must be of the same length (no less than two), otherwise @@ -739,7 +739,7 @@ However, for reading convenience, most of the examples show sorted sequences. Return the `Pearson's correlation coefficient `_ - for two inputs. Pearson's correlation coefficient *r* takes values + for two sequence inputs. Pearson's correlation coefficient *r* takes values between -1 and +1. It measures the strength and direction of a linear relationship. @@ -802,7 +802,7 @@ However, for reading convenience, most of the examples show sorted sequences. (it is equal to the difference between predicted and actual values of the dependent variable). - Both inputs must be of the same length (no less than two), and + Both inputs must be sequences of the same length (no less than two), and the independent variable *x* cannot be constant; otherwise a :exc:`StatisticsError` is raised.