Osborn, Inc., produces cell phone equipment.
Amanda Westerly, Osborn’s president,
implemented a quality-improvement program that has now been in operation for 2 years. The
cost report shown here has recently been issued.
Required:
1. For each period, calculate the ratio of each COQ category to revenues
and to total quality costs.
2. Based on the results of requirement 1, would you conclude that Osborn’s
quality program has been successful? Prepare a short report to present your
case.
3. Based on the 2015 survey, Amanda Westerly believed that Osborn had to
improve product quality. In making her case to Osborn management, how
might Westerly have estimated the opportunity cost of not implementing the
quality-improvement program?
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SOLUTION
(30 min.) Costs of quality.
1. The ratios of each COQ category to revenues and to total quality costs for each period are
as follows:
Osborn, Inc.: Semi-Annual Costs of Quality Report
(in thousands)
6/30/2016 12/31/2016 6/30/2017
% of Total % of Total % of Total
% of Quality % of Quality % of Quality
Actual Revenues Costs Actual Revenues Costs Actual Revenues Costs Actua
(2) = (3) = (5) = (6) = (8) = (9) =
(1) (1) ÷ $8,220 (1) ÷ $2,096 (4) (4) ÷ $9,180 (4) ÷ $2,168 (7) (7) ÷ $9,260 (7) ÷ $1,641 (10)
Prevention costs
Machine maintenance $ 480 $ 480 $ 440 $ 29
Supplier training 21 90 45 3
Design reviews 30 218 198 19
Total prevention costs 531 6.5% 25.3% 788 8.6% 36.4% 683 7.4% 41.6% 52
Appraisal costs
Incoming inspection 109 124 89 5
Final testing 327 327 302 20
Total appraisal costs 436 5.3% 20.8% 451 4.9% 20.8% 391 4.2% 23.8% 25
Internal failure costs
Rework 226 206 166 11
Scrap 127 124 68 6
Total internal failure costs 353 4.3% 16.9% 330 3.6% 15.2% 234 2.5% 14.3% 18
External failure costs
Warranty repairs 182 89 70 6
Customer returns 594 510 263 18
Total external failure costs 776 9.4% 37.0% 599 6.5% 27.6% 333 3.6% 20.3% 25
Total quality costs $2,096 25.5% 100.0% $2,168 23.6% 100.0% $1,641 17.7% 100.0% $1,21
Total revenues $8,220 $9,180 $9,260 $9,05
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