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# ch02 - Chapter 2 The Cost Function LEARNING OBJECTIVES...

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Chapter 2 The Cost Function LEARNING OBJECTIVES Chapter 2 addresses the following questions: Q1 What are different ways to describe cost behavior? Q2 What is a learning curve? Q3 What process is used to estimate future costs? Q4 How are the engineered estimate, account analysis, and two-point methods used to estimate cost functions? Q5 How does a scatter plot assist with categorizing a cost? Q6 How is regression analysis used to estimate a mixed cost function? Q7 What are the uses and limitations of future cost estimates? These learning questions (Q1 through Q7) are cross-referenced in the textbook to individual exercises and problems. COMPLEXITY SYMBOLS The textbook uses a coding system to identify the complexity of individual requirements in the exercises and problems. Questions Having a Single Correct Answer: No Symbol This question requires students to recall or apply knowledge as shown in the textbook. e This question requires students to extend knowledge beyond the applications shown in the textbook. Open-ended questions are coded according to the skills described in Steps for Better Thinking (Exhibit 1.10): Step 1 skills (Identifying) Step 2 skills (Exploring) Step 3 skills (Prioritizing) Step 4 skills (Envisioning)

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2-2 Cost Management QUESTIONS 2.1 This function has both fixed costs and variable costs. If at least part of the cost is variable; total cost increases as production volumes increase. If at least part of the cost is fixed, the average total per-unit cost decreases because the average fixed cost decreases as volume increases. 2.2 Several years’ worth of data for August would be helpful for estimating the overhead cost function for subsequent Augusts, but the August data should not be used for estimating the overhead cost function for other months during the year. It is highly unlikely that the August data would be representative of the data during normal operations. However, August’s costs are probably a good estimate of the fixed costs for other months. When zero production occurs, only fixed costs are incurred. 2.3 Since time appears to be of the essence, one of several cost estimation techniques might be employed. First, account analysis will provide a rough estimate. Second, the two most recent income statements could be used to approximate fixed and variable costs using the two-point method, but the president would need to understand that the quality of information could be low using this method. Third, if enough observations of cost data are readily available, regression analysis can be run. However, usually it takes more time to collect the data necessary to use regression analysis. 2.4 The information leads to a conclusion that fixed costs exist because cost per unit changes between two levels of activity within the relevant range. The information is not sufficient to determine the amount of fixed costs or whether variable costs exist.
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ch02 - Chapter 2 The Cost Function LEARNING OBJECTIVES...

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