statsmodels / statsmodels/statsmodels

weightstats add skew and kurtosis, and moments

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comp-stats type-enh
Dominant language
Python
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Description

weightstats.DescrStatsW has only mean and variance and no higher moments

http://stackoverflow.com/questions/17588085/kurtosis-skewness-of-a-bar-graph-python

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating weightstats.DescrStatsW and review its existing mean and variance calculations. Determine the expected definitions for skewness, kurtosis, and higher moments from the linked reference, then add coverage for the requested results and run the relevant statsmodels tests; done means DescrStatsW exposes the requested higher-moment statistics.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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