Operations Management
13th Edition
ISBN: 9781259667473
Author: William J Stevenson
Publisher: McGraw-Hill Education
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Chapter 10, Problem 28P
Summary Introduction
To determine: The results of the control charts.
Introduction:
Control chart:
It is a graph used to analyze the process change over a time period. A control chart has a upper control limit, and lower control which are used plot the time order.
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In response to intensive foreign competition, the management of Florex Company has attempted over the past year to improve the quality of its products. A statistical process control system has been installed and other steps have been taken to decrease the amount of warranty and other field costs, which have been trending upward over the past several years. Costs relating to quality and quality control over the last two years are given below:
Costs (in thousands)
Last Year
This Year
Inspection
$ 720
$ 909
Quality engineering
$ 450
$ 765
Depreciation of test equipment
$ 675
$ 270
Rework labor
$ 1,080
$ 1,530
Statistical process control
$ 0
$ 225
Cost of field servicing
$ 1,350
$ 1,260
Supplies used in testing
$ 45
$ 81
Systems development
$ 720
$ 900
Warranty repairs
$ 3,780
$ 1,620
Net cost of scrap
$ 630
$ 1,170
Product testing
$ 900
$ 1,800
Product recalls
$ 3,150
$ 900
Disposal of defective products
$ 810
$ 1,080
Sales have been flat over the…
The Operations Manager of supermarket has received the following customer complaints for a 4-week period:Nature of complaintNumber of complaintsGoods out of stock53Cashiers rude38Incorrect prices on display75No trolleys available20No hand sanitizer15
Construct a Check Sheet for the above data?
The following is a control chart for the average number of minor errors in 22 service reports. Whatcan you conclude from these data? Explain how you reached your conclusion.
Chapter 10 Solutions
Operations Management
Ch. 10.2 - A potato chip is a delicate thing Fragile A pound...Ch. 10.2 - A potato chip is a delicate thing Fragile A pound...Ch. 10.5 - It's estimated that more than 7 000 hospital...Ch. 10.5 - It's estimated that more than 7 000 hospital...Ch. 10 - Prob. 1DRQCh. 10 - Prob. 2DRQCh. 10 - Prob. 3DRQCh. 10 - Prob. 4DRQCh. 10 - Prob. 5DRQCh. 10 - Prob. 6DRQ
Ch. 10 - Prob. 7DRQCh. 10 - Prob. 8DRQCh. 10 - Prob. 9DRQCh. 10 - Prob. 10DRQCh. 10 - Prob. 11DRQCh. 10 - Prob. 12DRQCh. 10 - Prob. 13DRQCh. 10 - Prob. 14DRQCh. 10 - Prob. 15DRQCh. 10 - Prob. 16DRQCh. 10 - Prob. 1TSCh. 10 - Prob. 2TSCh. 10 - Prob. 3TSCh. 10 - Prob. 1CTECh. 10 - Prob. 2CTECh. 10 - Prob. 3CTECh. 10 - Prob. 4CTECh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - Prob. 13PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - A production process consists of a three-step...Ch. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 1.1CQCh. 10 - Prob. 2.1CQCh. 10 - Prob. 2.2CQCh. 10 - Prob. 2.3CQCh. 10 - Prob. 2.4CQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- 3. Describe the concept of the internal customer and its relevance from a quality perspective.arrow_forwardSanjeevini is a 100 bed hospital established 10 years ago and is performing well. Now the hospital is facing trouble in sourcing inpatients due to various reasons, one of them being improper inpatient nursing care. So the hospital management plans to intervene to improve the inpatient Care Experience. Develop a questionnaire OF 20 questions to study the patient satisfaction in the hospitalarrow_forwardThe Minnow County Highway Safety Department monitors accidents at the intersection of Routes 123and 14. Accidents at the intersection have averaged three per month.a. Which type of control chart should be used? Construct a control chart with three-sigma controllimits.b. Last month, seven accidents occurred at the intersection. Is this sufficient evidence to justify aclaim that something has changed at the intersection?arrow_forward
- Last year, the manager of the service department at EastWoods Ford instituted a customer opinion program to findout how to improve service. One week after service on a vehicle was performed, an assistant would call the customer tofind out whether the work had been done satisfactorily andhow service could be improved. After one year of gatheringdata, the assistant discovered that the complaints could begrouped into the following five categories:a. Use OM Explorer to draw a bar chart and a Pareto chart toidentify the significant service problems.b. Categorize the following causes of complaints into acause-and-effect diagram: tools, scheduling, defectiveparts, training, billing system, performance measures,diagnostic equipment, and communications.arrow_forwardQuality Measurement Explanation: Identifies several quality measurements, including both direct and indirect measurementsarrow_forwardDiscuss how would you utilize the following tools to detect and analyse quality problems in an organisation:Cause-and-effect diagramsarrow_forward
- Briefly discuss how the following methods can be used to improve quality: Quality Function Deployment Statistical Process Controlarrow_forwardUse the dimensions of quality to describe typical characteristics of these products and services:a. A television setarrow_forwardUse the dimensions of quality to describe typical characteristics of these products and services:e. Surgery and postsurgery carearrow_forward
- The following table lists all costs of quality incurred by Sam's Surf Shop last year. Annual inspection costs Annual cost of scrap materials Annual rework cost $ 247,000 456,000 204,679 626,000 1,886,000 664,000 Annual cost of quality training Annual warranty cost Annual testing cost What was Sam's appraisal cost for quality last year? Appraisal costarrow_forward4. Problem 8.29 The number of imperfections in bond paper produced by a paper mill is observed over a period of several days. Table 8-28 shows the area inspected and the number of imperfections for 25 samples. Construct a control chart for the number of imperfections per square meter. Revise the limits, if necessary, assuming special causes for the out-of-control points. TABLE 8-28 Area Area Sample Inspected (m?) Imperfections Sample Inspected (m²) Imperfections 1 150 6 14 300 8 2 100 8 15 300 12 3 200 5 16 200 6 4 150 4 17 150 4 250 10 18 200 7 6. 100 11 19 150 14 7 150 20 100 4 8 200 5 21 100 8 9 300 10 22 200 10 250 10 23 300 12 11 100 24 250 7 12 200 4 25 200 5 13 250 12arrow_forwardUsing the information above, identify the independent variable and its important characteristics, including the scale of measurement, needed to accurately design your study.arrow_forward
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