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A group of students took a test and the following frequency table shows the scores...

Mathematics
WAEC 1988

A group of students took a test and the following frequency table shows the scores above


The mean score is

  • A. 1.75
  • B. 2
  • C. 2.5
  • D. 2.75
  • E. 3
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Correct Answer: Option D
Explanation
Score 0 1 2 3 4 5 Total
Freq 2 3 4 2 7 2 20
\(fx\) 0 3 8 6 28 10 55

\(\bar{x} = \frac{\sum fx}{\sum f}\)

= \(\frac{55}{20}\)

= \(2.75\)

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