This is concerned with frequency.
Can be used to test whether the observed frequencies in a particular case differ significantly from those which would be expected in the null hypothesis.
source: analysis related lectures
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A Chi-square table is used in a Chi-square test in statistics. A Chi-square test is used to compare observed data with the expected hypothetical data.
no
If your chi square test has a probability of 0.05 or less it is likely, but not certain, that your hypothesis is not correct.
c2 (Chi Square)
The symbol for hypothesis test is c2 ( Chi Square)