Amount spent # of students cumulative frequency 1 -10 3 3 11-20 7 10 21-30 9 19 31-40 11 41-50 8 51-60 2 (a) complete the table to show the cumulative frequency (b) using...
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Amount spent # of students cumulative frequency 1 -10 3 3 11-20 7 10 21-30 9 19 31-40 11 41-50 8 51-60 2
(a) complete the table to show the cumulative frequency
(b) using the scale of 1 cm to represent $5 on the horizontalaxis and 1cm to represent 5 students on the vertical axis, draw thecumulative frequency graph for the data.
(marks will be awarded for axis appropriately labelled, pointscorrectly plotted and a smooth curve carefully drawn)
(c) use your graph to estimate (i) the median amount of moneyspent (ii)the probability that a student chosen at random spentless than $23 during the week.
show on your graph, using broken lines, how these estimates weredetermined.
| Amount spent | # of students | cumulative frequency |
| 1 -10 | 3 | 3 |
| 11-20 | 7 | 10 |
| 21-30 | 9 | 19 |
| 31-40 | 11 | |
| 41-50 | 8 | |
| 51-60 | 2 |
(a) complete the table to show the cumulative frequency
(b) using the scale of 1 cm to represent $5 on the horizontalaxis and 1cm to represent 5 students on the vertical axis, draw thecumulative frequency graph for the data.
(marks will be awarded for axis appropriately labelled, pointscorrectly plotted and a smooth curve carefully drawn)
(c) use your graph to estimate (i) the median amount of moneyspent (ii)the probability that a student chosen at random spentless than $23 during the week.
show on your graph, using broken lines, how these estimates weredetermined.
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