When the class intervals have equal width, the height of a rectangle in a histogram represents

  1. A. Width of the class
  2. B. Lower class limit
  3. C. Upper class limit
  4. D. Frequency of the class

Correct Answer: D. Frequency of the class

Explanation

In a histogram with equal class intervals, the area of each rectangle is proportional to its frequency, making the height directly proportional to the frequency of the class.

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