The production of a soft drink company in thousands of litres during each month of a year is as follows :
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 1.2 0.8 1.4 1.6 1.8 2.4 2.6 3.0 3.6 2.8 1.9 3.4 Calculate the five monthly moving averages and show these moving averages on a graph. This
