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. . . Learning Objectives. Define and describe cost behaviour and explain the role of the resource usage model in understanding cost behaviour.Separate mixed costs into their fixed and variable components using the high-low method, the scatterplot method, and the method of least squares.Evaluate t
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1. Chapter 3 - Activity Cost Behaviour
2. Define and describe cost behaviour and explain the role of the resource usage model in understanding cost behaviour.
Separate mixed costs into their fixed and variable components using the high-low method, the scatterplot method, and the method of least squares.
Evaluate the reliability of a cost equation.
Explain the role of multiple regression in assessing cost behaviour.
Describe the use of managerial judgement in determining cost behaviour.
3. Basic Terms - 1 Activity capacity: the ability to perform activities
Practical capacity: the efficient level of activity performance
Resources: economic inputs that are consumed in performing activities
Resource spending: the cost of acquiring capacity to perform an activity
Resource usage: the amount of activity capacity used in producing the activity output
4. Basic Terms - 2 Resources supplied as used and needed: these are resources that are acquired from outside sources, where the terms of acquisition do not require any long-term commitment for any given amount of the resource. Examples: materials & energy
Resources supplied in advance of usage: these are resources acquired by the use of either an explicit or implicit contract to obtain a given quantity of resource, regardless of whether the quantity of the resource available is fully used or not.
5. Cost Behaviour
6. Total versus Average Variable Cost Example:
Suppose that Porter Pottery Company makes mugs. Each mug requires 1/4kg. of clay at $2 per kg. If Porter manufactures 5,000 mugs, the total cost of clay is $2,500 (5,000 x $2 x .25). If Porter manufactures 10,000 mugs, total cost of clay is $5,000 (10,000 x $2 x .25). The average cost of clay per mug stays at $0.50 (.25 x 2) no matter how many mugs are made.
7. Total versus Average Variable Cost Total Variable Cost
Cost TVC = $.5X
$5,000
$2,500
5,000 10,000
Mugs
8. Total versus Average Variable Cost(continued) Average Variable Cost
Cost
$0.50 AVC = $0.50
5,000 10,000
Mugs
9. Total Fixed versus Average Fixed Cost Total Fixed Cost
Cost
$1,500 Year 2
$1,000 Year 1
$500
Activity Level
10. Total Fixed versus Average Fixed Cost(continued) Total versus Average Fixed Cost
Cost
TFC
AFC
Activity Level
11. The Behaviour of Mixed Costs
12. Step Variable Costs
13. Types of Fixed Costs Committed Fixed Costs
Discretionary Fixed Costs
Step Fixed Costs
14. Step Fixed Costs
15. Methods for Separating Mixed Cost Into Fixed and Variable Components The High-Low Method
Scatterplot Method
The Method of Least Squares
16. Mixed Costs: An Example
17. The High-Low Method
18. Scatterplot Method
19. The Method of Least Squares
20. The Method of Least Squares: Goodness of Fit
22. Cost Behaviour and Managerial Judgement
23. Numerical Questions from back of chapters 2 and 3 W2-3, E2-9, P2-1, P2-9
W3-3, E3-9, P3-1
24. Question W2-3 Please go to your text to read this question.
25. Question E2-9 Please go to your text to read this question.
26. Question P2-1 Please go to your text to read this question.
27. Question P2-9 Please go to your text to read this question.
28. Question W3-3 Please go to your text to read this question.
29. Question E3-9 Please go to your text to read this question.
30. Question P3-1 Please go to your text to read this question.
31. The End