Contingency analysis - The X2 contingency test
5 important questions on Contingency analysis - The X2 contingency test
What does the X2 contingency test test?
What is the hypothesis of the X2 contingency test?
Ha: the categorical variables are not independent.
What should be calculated for the X2 contingency test, take in mind you have a data table with columns and rows.
- X2 statistic for contingency X2 = Σ[observed(column, row) - Expected(colmn,row)]2/expected(column/row)- Degrees of freedom df=(r-1)(c-1)
- P-value; the critical value with df = x and siginificance level α
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What can be done is the assumptions are not met for the X2 contingency test?
2. Fisher's exact test if the contingency table is 2 x 2
What is the Yates correction for continuity?
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