The controller of Willson Company has computed quality costs as a percentage of sales for the past five years (2011 was the first year the company implemented a quality improvement program). This information is as follows:

Required:
1. Prepare a trend graph for total quality costs. Comment on what the graph has to say about the success of the quality improvement program.
2. Prepare a graph that shows the trend for each quality cost category. What does the graph have to say about the success of the quality improvement program? Does this graph supply more insight than the total cost trend graph does?
3. Prepareagraphthatcomparesthetrendinrelativequalitycosts.Whatdoesthisgraphtellyou?

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Internal External Failure Failure 8.0% 5.5 Total 25.0% 24.0 20.5 Prevention Appraisal 2% 3% 12% 2012 2013 2014 2015 10 12.0