Chi Squared Test Example. For brown we have 42 100 2 100 33 64. 1 chi square test for goodness of fit.
For red we have 50 100 2 100 25. This has been done in columns 2 and 3 of table 8 2. For example in some clinical trials the outcome is a classification such as hypertensive pre hypertensive or normotensive.
Continue doing this for the rest of the cells and add the final numbers for each cell together to get the final chi square number.
We want to know if gender is associated with political party preference so we survey 500 voters and record their gender and political party preference. A scientist wants to know if education level and marital status are related for all people in some country. The rest of the calculation is difficult so either look it up in a table or use the chi square calculator. It is used to perceive the proximity of a sample that suits a population.
