Why is there confusion over whether constant sum data are ordinal or metric?
What will be an ideal response?
The constant sum has an absolute zero ? 10 points are twice as many as 5 points, and the difference between 5 and 2 points is the same as the difference between 57 and 54 points. For this reason, constant sum scale data are sometimes treated as metric. Although this may be appropriate in the limited context of the stimuli scaled, these results are not generalizable to other stimuli not included in the study. Hence, strictly speaking, the constant sum should be considered an ordinal scale because of its comparative nature and the resulting lack of generalizability.
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A) steady sales throughout the year B) peak seasons but do sell throughout the entire year C) peak seasons at certain times in the year and are not purchased at all during other times of the year D) a high level of fluctuating demand