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Consider the following statements in respect of class intervals of grouped frequency distribution: 1. Class intervals need not be mutually exclusive. 2. Class intervals should be exhaustive. 3. Class intervals need not be of equal width. Which of the above statements are correct? 

Consider the following statements in respect of class intervals of grouped frequency distribution: 1. Class intervals need not be mutually exclusive. 2. Class intervals should be exhaustive. 3. Class intervals need not be of equal width. Which of the above statements are correct?  Correct Answer 2 and 3 only

Concept:

Properties of class intervals:

  • Class intervals are mutually exclusive or Independent.
  • Class interval include all elements so Class intervals should be exhaustive.
  • Class intervals need not be of equal width.

 

So, statement 2 and 3 are correct.

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