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

The correct answer is C. 24.5

Modal class 20 - 29

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

= \(\frac{49}{2}\)

= 24.5

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