Higher November 2020 Paper 1R Q11

EdexcelHigherCurrent spec5 marksCumulative Frequency

11 The frequency table gives information about the ages of the 80 people in a train carriage.

Age (\(a\) years)Frequency
\(0 \lt a \leqslant 20\)9
\(20 \lt a \leqslant 30\)19
\(30 \lt a \leqslant 40\)17
\(40 \lt a \leqslant 50\)18
\(50 \lt a \leqslant 60\)13
\(60 \lt a \leqslant 70\)4
(a) Complete the cumulative frequency table. (1)
Age (\(a\) years)Cumulative frequency
\(0 \lt a \leqslant 20\) 
\(0 \lt a \leqslant 30\) 
\(0 \lt a \leqslant 40\) 
\(0 \lt a \leqslant 50\) 
\(0 \lt a \leqslant 60\) 
\(0 \lt a \leqslant 70\) 
(b) On the grid, draw a cumulative frequency graph for your table. (2)
Grid with age in years from 0 to 70 on the horizontal axis and cumulative frequency from 0 to 80 on the vertical axis
(c) Use your graph to find an estimate for the median age of the people in the train carriage. (2)
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