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Question

If the class mark of a class interval is 25, then the sum of its lower and upper class limits is


  1. 0

  2. 25

  3. 50

  4. 10


Solution

The correct option is C

50


Class mark = lower class limit + upper class limit2

Class mark ×2 = lower class limit + upper class limit

lower class limit + upper class limit = 25×2 = 50

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