![]() ![]() As such, the chi-square calculation is as follows. However, in reality, 30 students achieved a score of 5. As such, you expected 25 of the students would achieve a grade 5. ![]() You can then use the chi-square test to determine the extent to which your predicted grades differed from the actual grades. The students you teach complete a test that is graded on a scale ranging from 2 lowest possible grade through to 5 highest possible grade.
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