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Kelly Gray, production manager, was upset with the latest performance report, which indicated that she was $ 1 0 0 , 0 0 0 over

Kelly Gray, production manager, was upset with the latest performance report, which indicated that she was $100,000 over budget. Given the efforts that she and her workers had made, she was confident that they had met or beat the budget. Now, she was not only upset but also genuinely puzzled over the results. Three itemsdirect labor, power, and setupswere over budget. The actual costs for these three items follow:
Actual Costs
Direct labor $212,290
Power 134,820
Setups 138,745
Total $485,855
Kelly knew that her operation had produced more units than originally had been budgeted, so more power and labor had naturally been used. She also knew that the uncertainty in scheduling had led to more setups than planned. When she pointed this out to John Huang, the controller, he assured her that the budgeted costs had been adjusted for the increase in productive activity. Curious, Kelly questioned John about the methods used to make the adjustment.
JOHN: If the actual level of activity differs from the original planned level, we adjust the budget by using budget formulasformulas that allow us to predict what the costs will be for different levels of activity.
KELLY: The approach sounds reasonable. However, I'm sure something is wrong here. Tell me exactly how you adjusted the costs of labor, power, and setups.
JOHN: First, we obtain formulas for the individual items in the budget by using the method of least squares. We assume that cost variations can be explained by variations in productive activity where activity is measured by direct labor hours. Here is a list of the cost formulas for the three items you mentioned. The variable X is the number of direct labor hours:
Labor cost = $10X
Power cost = $5,180+ $4.1X
Setup cost = $100,400
KELLY: I think I see the problem. Power costs don't have a lot to do with direct labor hours. They have more to do with machine hours. As production increases, machine hours increase more rapidly than direct labor hours. Also, ...
JOHN: You know, you have a point. The coefficient of determination for power cost is only about 50 percent. That leaves a lot of unexplained cost variation. The coefficient for labor, however, is much betterit explains about 96 percent of the cost variation. Setup costs, of course, are fixed.
KELLY: Well, as I was about to say, setup costs also have very little to do with direct labor hours. And I might add that they certainly are not fixedat least not all of them. We had to do more setups than our original plan called for because of the scheduling changes. And we have to pay our people when they work extra hours. It seems as if we are always paying overtime. I wonder if we simply do not have enough people for the setup activity. Supplies are used for each setup, and these are not cheap. Did you build these extra costs of increased setup activity into your budget?
JOHN: No, we assumed that setup costs were fixed. I see now that some of them could vary as the number of setups increases. Kelly, let me see if I can develop some cost formulas based on better explanatory variables. I'll get back with you in a few days.
Assume that after a few days' work, John developed the following cost formulas, all with a coefficient of determination greater than 90 percent:
Labor cost = $10X; where X = Direct labor hours
Power cost = $67,900+0.90Y; where Y = Machine hours
Setup cost = $98,170+ $395Z; where Z = Number of setups
The actual measures of each of the activity drivers are as follows:
Direct labor hours 20,300
Machine hours 90,400
Number of setups 107
Required:
Question Content Area
1. Prepare a performance report for direct labor, power, and setups using the direct-labor-based formulas.
blank
blank
Performance Report
blank Actual Costs Budgeted Costs Budget Variance Favorable (F) or Unfavorable (U)
Direct labor
$Unfavorable
20,300
$Unfavorable
$Unfavorable
Unfavorable
Power
Unfavorable
Unfavorable
Unfavorable
Unfavorable
Setups
Unfavorable
Unfavorable
Unfavorable
Unfavorable
Total $Unfavorable
$Unfavorable
$Unfavorable
Unfavorable
Question Content Area
2. Prepare a performance report for direct labor, power, and setups using the multiple cost driver formulas that John developed.
blank
blank
Performance Report
blank Actual Costs Budgeted Costs Budget Variance Favorable (F) or Unfavorable (U)
Direct labor
$Unfavorable
$Unfavorable
3
$Unfavorable
Unfavorable
Power
Favorable
Favorable
Favorable
Favorable
Setups
Favorable
Favorable
Favorable
Favorable
Total $Favorable
$Favorable
$Favorable
Favorable
Question Content Area

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