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StatsToDo: Kendall's Coefficient for Concordance by Ranks (W)

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Explanations and References Javascript Program
Input Data

Data Entry
The data is a table of ordinal values or ranks
  - Each rows from a subject
  - Each column from a judge, rater, or instrument
  - Each cell contains the rank or value the judge (col) assigned to that subject(row)

Although Kendall's W is designed for ranks, this page can calculate using values, as the values are converted into ranks before calculation.

A minimum of 3 columns should be used. Concordance for 2 raters should use Cohen's Kappa

R Codes