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Chi Square test

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The the Chi Square formula test is used to investigate if distributions of categorical variables differs from one another (Ordinal Scale).
There are 3 different modes in the Chi Square test:
  1. Two way count data
  2. Equal proportions
  3. Specific proportions
These can be selected with the check box.

Two way count data

To test the difference between to groups of categorical data.

Interpretation

Colors of the cells

Formula

formula

Legend

formula counts
formula expected counts
formula Column
formula Row

Example

There is no significant difference between the data-sets in column D and E.

Data file

Equal proportions

To test if there is a difference between one of the category and the rest of the data.

Interpretation

Colors of the cells

Formula

formula sum of counts / amount of options
formula

Legend

formula counts
formula expected counts

Example

One of the counts in Column A is significantly different.

Data file

Specific proportions

To test if there is a difference between categorical data and the expected data.

Interpretation

Colors of the cells

Formula

formula sum of counts * percentage (in second column)
formula

Legend

formula counts
formula expected counts

Example

There is no significant difference between Column A and the expected ratios.

Data file

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