Question
Question (6 marks)
The heights of 100 plants were measured. The cumulative frequency at heights 10, 20, 30, 40, 50 cm is 8, 28, 62, 88, 100 respectively.
(a) Use a cumulative frequency curve to estimate the median and the interquartile range. (3) (b) Draw a box plot, given that the smallest plant is 5 cm and the tallest is 50 cm. (3)
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