Albatross Plc, the Australian subsidiary of a British packaging company, is preparing its budget for the year
Question:
Albatross Plc, the Australian subsidiary of a British packaging company, is preparing its budget for the year to 30 June 2019. In respect of fuel oil consumption, it is desired to estimate an equation of the form y = a + bx, where y is the total expense at an activity level x, a is the fixed expense and bis the rate of variable cost.The following data relates to the year ending 30 June 2018:
The annual total and monthly average figures for the year ending 30 June 2018 were as follows:
You are required to:(a) Estimate fixed and variable elements of fuel oil expense from the above data by both the following methods:(i) High and low points.(ii) Least-squares regression analysis;(b) Compare briefly the methods used in (a) above in relation to the task of estimating fixed and variable elements of a semi-variable cost;
(c) Accepting that the coefficient of determination arising from the data given in the question is approximately 0.25, interpret the significance of this fact.
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