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Feb
Interactive Chi Square Test. So once you know the degrees of freedom or df you can use a chi square table like the one on the right to show you the chi-square-crit corresponding to a p-value of 005. The numbers must be large enough. Eg -2 sum ln p. For each study take the natural logarithm ln of the probability p-value from testing the observed chi-square for the study.
However the distribution approaches the normal one as we increase the degrees of freedom. This is appropriate when you wish to compare two or more groups and the outcome variable is categorical. The 100 students you teach complete a test that is graded on a scale ranging from 2 lowest possible grade through to 5 highest possible grade. Or have you found something significant. Sum across studies then multiply by -2. Chi-Square Statistical Test Evaluates Independence.
Thats the whole detour summed up in one sentence.
This is a easy chi-square calculator for a contingency table that has up to five rows and five columns for alternative chi-square calculators see the column to your right. But is that just random chance. We explain this widely used and valuable test other statistical alternatives and non-discrimination uses. Eg -2 sum ln p. Lets say you are a college professor. Leave blank the last rows that dont have data values.