Statistics Exam Question

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The management of Wheeler Company has decided to develop cost formulas for its major overhead activities. Wheeler uses a highly automated manufacturing process, and power costs are a significant manufacturing cost. They have debated whether the power cost should be treated as fixed, variable, or both. Using the following data, you are charged to settle this issue and determine the best cost formula for Wheeler.

Quarter

Machine Hrs.

Power Cost

1

20000

26000

2

25000

38000

3

30000

42500

4

22000

37000

5

21000

34000

6

18000

29000

7

24000

36000

8

28000

40000

  1. Find the estimated fixed cost associated with the machine hours.
  1. Find the estimated variable cost associated with the machine hours.
  1. Discuss your confidence in the use of these estimates.
  1. Would you recommend using this cost function? Explain.

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