8

The number of offenses committed in the past year by four drivers of a transport company and their respective experience in years is represented by the following table:

Years (x) 3 4 5 6
Offenses (y) 4 3 2 1

Calculate the linear correlation coefficient and interpret it.


xi yi xi ·yi xi2 yi2
3 4 12 9 16
4 3 12 16 9
5 2 10 25 4
6 1 6 36 1
18 10 40 86 30

Correlation and Regression Calculations

Correlation and Regression Calculations

Correlation and Regression Calculations

Correlation and Regression Solution

There is a perfect and negative correlation.