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%
jamb 2009mathematics

The correct answer is B. 28%

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%

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