Question 2 - A-Level Maths

Exam Board	CAIE
Module	S1 (Statistics 1)
Year	2002
Session	June
Topic	Data representation
Type	Draw cumulative frequency graph from frequency table

2 The manager of a company noted the times spent in 80 meetings. The results were as follows.

Time ( \(t\) minutes)	\(0 < t \leqslant 15\)	\(15 < t \leqslant 30\)	\(30 < t \leqslant 60\)	\(60 < t \leqslant 90\)	\(90 < t \leqslant 120\)
Number of meetings	4	7	24	38	7

Draw a cumulative frequency graph and use this to estimate the median time and the interquartile range.