Chi Square Test Statistic Formula. The statistics button is to the right of the crosstabs window. χ 2 o i e i 2 e i.
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They are associated we use the following formula to calculate the chi square test statistic x 2. A very large chi square test statistic means that the data does not fit very well. Divide every one of the squared difference by the corresponding expected count.
The formula for chi square can be written as.
Null hypothesis the two variables are independent. Alternative hypothesis the two variables are not independent. Numerical variables and non numerical variables. A very large chi square test statistic means that the data does not fit very well.
