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The table shows the distribution of marks obtained by some students in a test Marks...

Further Mathematics
WAEC 2021

The table shows the distribution of marks obtained by some students in a test

Marks 0-9 10-19 20-29 30-39 40-49
Frequency 4 12 16 6 2

 

Find the modal class mark.

  • A. 4.5
  • B. 14.5
  • C. 24.5
  • D. 34.5
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Correct Answer: Option C
Explanation

Modal class 20 - 29

Modal class mark = \(\frac{20+29}{2}\)

= \(\frac{49}{2}\)

= 24.5

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