Study design

Contingency analysis study requirements and dataset layout.

Requirements

2 categorical variables.

or:

A qualitative response variable.
A categorical factor variable with 2 or more levels.

or:

2 or more repeated measurements on a qualitative response variable.

Dataset layout

Use a column for each variable (Eye color, Hair color); each row has the values of the variables.

Subject (optional)	Eye color	Hair color
1	Brown	Black
2	Blue	Red
3	Blue	Blonde
4	Brown	Red
5	Green	Blonde
6	Hazel	Brown
7	Blue	Blonde
8	Brown	Black
9	Green	Red
10	Green	Blonde
…	…	…

Frequency form dataset layout

Use a column for each variable (Eye color, Hair color) and a column for the number of cases (Frequency); each row has the values of the variables and the frequency count.

Eye color	Hair color	Frequency
Brown	Black	69
Brown	Brown	119
Brown	Red	26
Brown	Blonde	7
Blue	Black	20
Blue	Brown	84
Blue	Red	17
Blue	Blonde	94
Hazel	Black	15
Hazel	Brown	54
Hazel	Red	14
Hazel	Blonde	10
Green	Black	5
Green	Brown	29
Green	Red	14
Green	Blonde	16

Available in Analyse-it Editions
Standard edition
Method Validation edition
Quality Control & Improvement edition
Ultimate edition