The frequency table shows the times, $$\(t\)$$ minutes, each of 100 children spent exercising in one week. The information in the frequency table is shown in this cumulative frequency diagram. Use the cumulative frequency diagram to find an estimate of (a) the 60th percentile, ...................................... $$\(\min \)$$ (b) the number of children who spent more than 3 hours exercising. .............................................
Exam No：0580_w20_qp_41 Year：2020 Question No：3(b)(ii)
Answer:
(a) 90
(b) 8
(b) 8
Knowledge points:
E9.6.1 Construct and use cumulative frequency diagrams.
E9.6.2 Estimate and interpret the median, percentiles, quartiles and interquartile range.
Solution:
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