Higher November 2021 Paper 1 Q16

AQACurrent spec5 marksBox PlotsCumulative Frequency

16 The cumulative frequency graph represents the masses of 40 necklaces.

Cumulative frequency graph, mass (g) from 0 to 30 against cumulative frequency from 0 to 40. The curve rises slowly from (0, 0), steeply between about 20 g and 25 g, and ends at (30, 40).
(a) A jeweller buys every necklace with mass greater than 21 grams.

Use the graph to estimate how many she buys. [2 marks]

(b) The lowest mass was 3 grams.

The highest mass was 28 grams.

Draw a box plot to represent the data. [3 marks]

Empty grid with a horizontal axis Mass (g) from 0 to 30
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