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The class-mark of the class-interval 40 – 48 is ______. - Mathematics

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Question

The class-mark of the class-interval 40 – 48 is ______.

Options

  • 40

  • 42

  • 44

  • 48

MCQ
Fill in the Blanks
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Solution

The class-mark of the class-interval 40 – 48 is 44.

Explanation:

The class‑mark (midpoint) of a class interval is the average of its lower and upper limits.

i.e., `(40 + 48)/2` 

= `88/2`

= 44 

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Chapter 15: Statistics - Exercise 15D [Page 304]

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Nootan Mathematics [English] Class 9 ICSE
Chapter 15 Statistics
Exercise 15D | Q 1. | Page 304
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