Question one
a) The table below gives the interest rates of government bonds sold over a period of 12 months.
Month Interest rate (%) per annum
January 11.5
February 11.3
March 11.4
April 11.6
May 11.8
June 11.7
July 11.8
August 12.5
September 12.0
October 11.7
November 11.6
December 11.6
Required
i) Develop 3-month and 4-month moving averages for this series. (8 marks)
ii) Which moving average provides better forecast? Why? (2 marks)