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Using the cumulative frequency curve, estimate the median of the data represented on the graph.

Mathematics
WAEC 2011

Using the cumulative frequency curve, estimate the median of the data represented on the graph.

  • A. 35.5
  • B. 36.5
  • C. 37.5
  • D. 38.5
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Correct Answer: Option B
Explanation

Median = \(\frac{\text{N}}{2}\) th item

 = \(\frac{150}{2}\) th ≈ 36.5 from the graph.

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