Higher June 2023 Paper 2 Q9

EdexcelCurrent spec3 marksCumulative Frequency

9 The cumulative frequency table gives information about the ages of 80 people working for a company.

Age (\(a\) years)Cumulative frequency
\(20 \lt a \leqslant 30\)20
\(20 \lt a \leqslant 40\)48
\(20 \lt a \leqslant 50\)64
\(20 \lt a \leqslant 60\)75
\(20 \lt a \leqslant 70\)80
(a) On the grid below, draw a cumulative frequency graph for this information.
Grid with Age (years) from 20 to 70 on the horizontal axis and Cumulative frequency from 0 to 80 on the vertical axis
(2)
(b) Use your graph to find an estimate for the median age. (1)
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