Question 2 - A-Level Maths

Exam Board	OCR
Module	S1 (Statistics 1)
Year	2007
Session	January
Topic	Bivariate data
Type	Calculate r from raw bivariate data

2 The table contains data concerning five households selected at random from a certain town.

Number of people in the household	2	3	3	5	7
Number of cars belonging to people in the household	1	1	3	2	4

Calculate the product moment correlation coefficient, \(r\), for the data in the table.
Give a reason why it would not be sensible to use your answer to draw a conclusion about all the households in the town.