Rank-order tests assume that qualitative variables are continuous in nature.

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Rank-order tests do not assume that qualitative variables are continuous in nature. In fact, rank-order tests are often used to analyze non-parametric or non-normal data that cannot be treated as continuous variables. Rank-order tests use the ordinal scale of measurement, which ranks variables according to their relative position or order, rather than their actual numerical values.

Rank-Order Tests Assume That Qualitative Variables Are Continuous in Nature