4400 Higher November 2009 Paper 3 Q16

EdexcelHigherOld spec4 marksCumulative Frequency

16 The cumulative frequency diagram shows information about the heights, in centimetres, of 200 plants.

Cumulative frequency graph: cumulative frequency 0 to 200 against height 0 to 100 cm, S-shaped curve from about 33 cm to 95 cm
(a) Find an estimate for the median height. (2)
(b) Work out an estimate for the number of plants whose heights are greater than 80 cm. (2)
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