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Issue #27825: Improve for statistics data arguments. (Contributed by Mariatta Wijaya.)

This commit is contained in:
Raymond Hettinger 2016-11-21 16:31:02 -08:00
parent 8c5e190d36
commit 6da9078195
1 changed files with 5 additions and 5 deletions
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Doc/library/statistics.rst
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@ -69,8 +69,7 @@ However, for reading convenience, most of the examples show sorted sequences.
.. function:: mean(data) .. function:: mean(data)
Return the sample arithmetic mean of *data*, a sequence or iterator of Return the sample arithmetic mean of *data* which can be a sequence or iterator.
real-valued numbers.
The arithmetic mean is the sum of the data divided by the number of data The arithmetic mean is the sum of the data divided by the number of data
points. It is commonly called "the average", although it is only one of many points. It is commonly called "the average", although it is only one of many
@ -148,6 +147,7 @@ However, for reading convenience, most of the examples show sorted sequences.
Return the median (middle value) of numeric data, using the common "mean of Return the median (middle value) of numeric data, using the common "mean of
middle two" method. If *data* is empty, :exc:`StatisticsError` is raised. middle two" method. If *data* is empty, :exc:`StatisticsError` is raised.
*data* can be a sequence or iterator.
The median is a robust measure of central location, and is less affected by The median is a robust measure of central location, and is less affected by
the presence of outliers in your data. When the number of data points is the presence of outliers in your data. When the number of data points is
@ -175,7 +175,7 @@ However, for reading convenience, most of the examples show sorted sequences.
.. function:: median_low(data) .. function:: median_low(data)
Return the low median of numeric data. If *data* is empty, Return the low median of numeric data. If *data* is empty,
:exc:`StatisticsError` is raised. :exc:`StatisticsError` is raised. *data* can be a sequence or iterator.
The low median is always a member of the data set. When the number of data The low median is always a member of the data set. When the number of data
points is odd, the middle value is returned. When it is even, the smaller of points is odd, the middle value is returned. When it is even, the smaller of
@ -195,7 +195,7 @@ However, for reading convenience, most of the examples show sorted sequences.
.. function:: median_high(data) .. function:: median_high(data)
Return the high median of data. If *data* is empty, :exc:`StatisticsError` Return the high median of data. If *data* is empty, :exc:`StatisticsError`
is raised. is raised. *data* can be a sequence or iterator.
The high median is always a member of the data set. When the number of data The high median is always a member of the data set. When the number of data
points is odd, the middle value is returned. When it is even, the larger of points is odd, the middle value is returned. When it is even, the larger of
@ -216,7 +216,7 @@ However, for reading convenience, most of the examples show sorted sequences.
Return the median of grouped continuous data, calculated as the 50th Return the median of grouped continuous data, calculated as the 50th
percentile, using interpolation. If *data* is empty, :exc:`StatisticsError` percentile, using interpolation. If *data* is empty, :exc:`StatisticsError`
is raised. is raised. *data* can be a sequence or iterator.
.. doctest:: .. doctest::