2025 IGCSE 0580 May/June P43 Q19

2025 IGCSE 0580 May/June P43 Q19

4 marks

The table shows some information about the heights of 200 plants.

Height (\(h\) cm)Cumulative frequency
\(h\le30\)\(6\)
\(h\le40\)\(42\)
\(h\le50\)\(76\)
\(h\le60\)\(170\)
\(h\le70\)\(190\)
\(h\le80\)\(200\)
  1. Draw a cumulative frequency diagram to show this information.[3]
  2. Find an estimate of the 75th percentile.[1]

Solution:

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Answer:(a) Increasing curve through the cumulative-frequency points. (b) Approximately \(57\text{ cm}\).

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