Category:Contingency Tables

This category contains results about Contingency Tables.
Definitions specific to this category can be found in Definitions/Contingency Tables.

A contingency table is an array of $r$ rows and $c$ columns in which:

each row and each column is associated with a specific attribute

the number $n_{i j}$ in row $i$ and column $j$ is a count of the number of units having that combination of attributes.

It is then commonplace to perform a chi-squared test to investigate how the data may differ between categories.

Row and column categories may be either nominal or ordinal.