Which of the following statements is true about nominal scales?
A. The median is the only measure of central tendency that is appropriate if these scales are used.
B. Time, weight, length, and other physical measures are the best examples of these scales.
C. The levels of these scale variables are simply different categories or groups.
D. It is possible for researchers to rank order the levels of these scale variables from lowest to highest.
Answer: C
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__________. Fill in the blanks with correct word