Commit b530a446 authored by Raymond Hettinger's avatar Raymond Hettinger Committed by GitHub

Add examples to elucidate the formulas (GH-14898)

parent 4214f1ec
......@@ -527,14 +527,18 @@ However, for reading convenience, most of the examples show sorted sequences.
The default *method* is "exclusive" and is used for data sampled from
a population that can have more extreme values than found in the
samples. The portion of the population falling below the *i-th* of
*m* data points is computed as ``i / (m + 1)``.
*m* sorted data points is computed as ``i / (m + 1)``. Given nine
sample values, the method sorts them and assigns the following
percentiles: 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%.
Setting the *method* to "inclusive" is used for describing population
data or for samples that include the extreme points. The minimum
value in *dist* is treated as the 0th percentile and the maximum
value is treated as the 100th percentile. The portion of the
population falling below the *i-th* of *m* data points is computed as
``(i - 1) / (m - 1)``.
data or for samples that are known to include the most extreme values
from the population. The minimum value in *dist* is treated as the 0th
percentile and the maximum value is treated as the 100th percentile.
The portion of the population falling below the *i-th* of *m* sorted
data points is computed as ``(i - 1) / (m - 1)``. Given 11 sample
values, the method sorts them and assigns the following percentiles:
0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%.
If *dist* is an instance of a class that defines an
:meth:`~inv_cdf` method, setting *method* has no effect.
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment