Question 3

The Office for National Statistics publishes the average price per litre in

pence of ultra low sulphur/unleaded petrol


The Minitab worksheet petrol.mwx contains the data for 2021 and has two

columns. The column month gives the survey month where January is month

1. The column price2021 gives the average price in pence per litre in the

year 2021.

Fig: 1