Nominal variables and dichotomous variables are always treated the same.
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Q19: Descriptive statistics cannot be used to summarize
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Q21: Most psychological measurements are ratio scales.
Q22: Different statistics are required for variables with
Q23: Nominal variables have three or more unordered
Q25: Normal variables have an approximately normal frequency
Q26: The range of a normal curve is
Q27: All normal curves can be divided into
Q28: Approximately 34% of the area under the
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