Discussion
Chi-square (\(\chi^{2}\)) is a .............
Answer: D
Chi-square is a non-parametric test.
Parametric tests such as the t-test assume the data come from a population with a particular distribution, usually normal, and estimate its parameters such as the mean. The chi-square test makes no such assumption about the population: it compares observed frequencies in categories with the frequencies expected under a hypothesis, and works with nominal or ordinal data. That is why it is classed as non-parametric (distribution-free).
Validity and reliability are properties of a measuring instrument, assessed by other procedures; they are not types of statistical significance test.
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