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The cumulative frequency curve above shows the distribution of the scores of 50 students in...

Mathematics
JAMB 2009

The cumulative frequency curve above shows the distribution of the scores of 50 students in an examination. Find the 36th percentile scores?

  • A. 18%
  • B. 28%
  • C. 36%
  • D. 50%
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Correct Answer: Option B
Explanation

 the 36th percentile i.e. 36% of the total frequency of 50.

\(\frac{36}{100}\) \(\times\) 50 = 18

= From the graph, 18 on the vertical axis corresponds to28 on the horizontal axis.

\(\therefore\) P\(_{36}\) = 28%

There is an explanation video available below.


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Explanation Video

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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free