Question 4 - A-Level Maths

Exam Board	CAIE
Module	S1 (Statistics 1)
Year	2011
Session	November
Topic	Measures of Location and Spread
Type	Direct cumulative frequency graph reading

4 The weights of 220 sausages are summarised in the following table.

Weight (grams)	\(< 20\)	\(< 30\)	\(< 40\)	\(< 45\)	\(< 50\)	\(< 60\)	\(< 70\)
Cumulative frequency	0	20	50	100	160	210	220

State which interval the median weight lies in.
Find the smallest possible value and the largest possible value for the interquartile range.
State how many sausages weighed between 50 g and 60 g .
On graph paper, draw a histogram to represent the weights of the sausages.