Page 267 - F2 - MA Integrated Workbook STUDENT 2018-19

Statistical techniques

Test your understanding 3

For a set of 12 racing cars, the following data has been found for the power in
kw (x) and the top speed in mph (y).

x = 802

y = 1,850

xy = 124,258

2
x = 53,792
2
y = 287,868

The correlation coefficient to two decimal places is:

259