(c) c) The following table shows the results of a survey of the time taken (in minutes) by a group of children to comple

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C C The Following Table Shows The Results Of A Survey Of The Time Taken In Minutes By A Group Of Children To Comple 1 (49.97 KiB) Viewed 22 times

(c) c) The following table shows the results of a survey of the time taken (in minutes) by a group of children to complete a reading assignment. Time (minutes) 10-19 20-24 25-29 30-39 4049 50-59 60-69 Number of Children 8 15 22 18 12 10 5 Cumulative Frequency 8 23 45 90 (1) Complete the cumulative frequency row in the table above. [1 mark] (ii) On the grid provided on page 7, draw a cumulative frequency curve to represent the data in the table above. Use a scale of 2 cm to represent 10 minutes on the x-axis and 2 cm to represent 10 children on the y-axis. (4 marks] Using the cumulative frequency curve drawn in () (li) on page 7, (iii) estimate the median time taken to complete a reading assignment [1 mark] (iv) estimate the interquartile range [3 marks] (v) estimate the proportion of children who took less than 35 minutes to complete a reading assignment. 12 ma E Total 25 marks