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Grades such as A, B, and C are not considered interval data; they are typically classified as ordinal data. This is because grades represent a ranked order (A is better than B, which is better than C) but do not have a consistent numerical difference between them. For example, the difference in performance between an A and a B may not be the same as between a B and a C. Interval data, on the other hand, must have equal intervals between values and a meaningful zero point, which grades do not possess.

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4mo ago

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