The cumulative frequency diagram shows information about the time taken by each of 200 students to solve a problem. Use the diagram to find an estimate of the interquartile range. ...................................... $$\(\min \)$$
Exam No：0580_s21_qp_43 Year：2021 Question No：3(b)(ii)
Answer:
4
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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