Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Chapter 9, Problem 17CQ
Summary Introduction
To determine: The difference between p-charts and attribute-based control charts.
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Would a data series that contains values grouped into 10 categories be better displayed as a pie chart or a column chart?
. What is the difference between p-charts and attribute-based control charts?a. p-charts are more quantitative.b. Attribute-based control charts really are a marketing tool and have nothing to do withoperations.c. They are one and the same thing.d. p-charts monitor binary outcome variables, and attribute-based control charts monitorcontinuous outcome variables
3.1. Explain the difference between attribute control charts and variable control charts.
3.2. Select three service companies or organizations you are familiar with and indicate how process control charts could be used in each.
3.3. Select a local fast-food restaurant, retail store, grocery store, or bank, and identify the different processes that control charts could be used to monitor.
Chapter 9 Solutions
Operations Management
Ch. 9 - Prob. 1CQCh. 9 - Prob. 2CQCh. 9 - Prob. 3CQCh. 9 - Prob. 4CQCh. 9 - Prob. 5CQCh. 9 - Prob. 6CQCh. 9 - Prob. 7CQCh. 9 - Prob. 8CQCh. 9 - Prob. 9CQCh. 9 - Prob. 10CQ
Ch. 9 - Prob. 11CQCh. 9 - Prob. 12CQCh. 9 - Prob. 13CQCh. 9 - Prob. 14CQCh. 9 - Prob. 15CQCh. 9 - Prob. 16CQCh. 9 - Prob. 17CQCh. 9 - Prob. 18CQCh. 9 - Prob. 1PACh. 9 - Prob. 2PACh. 9 - Prob. 3PACh. 9 - Prob. 4PACh. 9 - Prob. 5PACh. 9 - Prob. 6PACh. 9 - Prob. 7PACh. 9 - Prob. 8PACh. 9 - Prob. 9PACh. 9 - Prob. 10PACh. 9 - Prob. 11PACh. 9 - Prob. 12PACh. 9 - Prob. 1CCh. 9 - Prob. 2C
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- Which is an INCORRECT way to analyze the process capability of a process (on a particular quality characteristic) that is not normally distributed? a. Use Cp(q) b. None of those listed c. Transform the data to normal first and use the transformed data on indices such as Cp which work well on normally distributed data. d. Use Cpc e. Use Cpmkarrow_forwardDEFINE: Typical descriptive research measuring tools 1. Descriptive statistics 2. Frequency table (with frequency and percent) 3. Charts (pie chart, bar chart, histogram, etc.) 4. Mean interpretation table (with the scale, its range for measurement purposes, scale description, and the mean interpretation) Typical correlational and comparative research measuring tools 1. Correlations 2. t-Test (paired samples, independent samples t-test) – for independent samples t-test, the grouping variable should be two categories only. 3. Analysis of variance (ANOVA) 4. Scales reliability test (interval or ratio scaled data) 5. Factor analysis 6. Normality test 7. Multiple regression analysisarrow_forwardGiven a c chart with UCL=10 LCL=0 when n=4. Revise it to find the new UCL and LCL of a c chart when n is changed to 1. Select one: a. UCL=4 LCL=0 b. UCL=9 LCL=0 c. UCL=18 LCL=0 d. UCL=12 LCL=0arrow_forward
- Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 13.7. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows. Use three-sigma control limits. 1 2 3 4 5 6 7 SAMPLE NUMBER 1 2 8 9 10 11 3 4 5 12 13 6 7 14 15 8 9 10 11 12 13 14 a. Calculate the mean and range for the above samples. (Round "Mean" to 2 decimal places and "Range" to the nearest whole number.) 15 READINGS (IN OHMS) 1094 983 1026 1013 988 1014 991 1030 995 991 1023 1014 982 970 1016 986 1811 1030 1027 1826 983 1817 1004 1817 1018 995 982 994 1008 1897 978 976 1016 977 1010 987 994 981 1820 1001 1004 995 1015 1026 984 1030 978 1017 974 995 1007 988 995 970 1004 1028 1012 1019 983 990 Sample Number Mean Rangearrow_forwardA plywood manufacturer is interested in monitoring the thickness of the plywood. Which of the following would be most useful for doing this? a)p-charts b)c-charts c)x-bar charts d)Histogramsarrow_forwardWhich of the following is NOT a common tool used in quality control a. acceptance sampling b. Pareto chart c. cause and effect diagram d. decision treesarrow_forward
- C: Determine the UCL and LCL for a X−�− chart. Note: Round your answers to 3 decimal places. D: Determine the UCL and LCL for R-chart. Note: Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places. E: What comments can you make about the process? multiple choice Process is in statistical control Process is out of statistical controlarrow_forward28. Which two of the following are perspectives from the balanced scorecard performance measurement model for achieving an organization's strategic objectives? Innovation and learning Firm infrastructure Operations Internal business processes Technology development 29. Which of the following is the best method for visualizing data about trends over time for several data sets on a single chart? A clustered bar chart A component bar chart A line chart A pie chartarrow_forwardPlease do not give solution in image formate thanku. Jim Corner, owner of Corner Bike Rentals, wants to start analyzing his company's quality. For each bike rental, there are four types of customer complaints:(1) bike not working properly, (2) wrong bike size, (3) bike uncomfortable, and (4) bike broken during operation. During the past week, his company rented 280 bikes. He received a total of twenty-six complaints If Jim wanted to operate at the five-sigma level, what would his errors have needed to be over the past week?arrow_forward
- (6.6-cr) Which of the following is false regarding control charts? Select one: a. Control charts that have values above the upper control limits imply that product quality is exceeding expectations. b. Control charts allow you to monitor standards c. Control charts allow corrective actions to be taken when the product or service is being produced. d. Control charts plot data over time. and. Control charts present data graphically.arrow_forward. Inspection results of video-of-the-month shipments to customers for 25 consecutive days are given in the following table. What central line and control limits should be established and posted if it is assumed that any out of-control points have assignable causes? The number of inspections each day is constant and equals 1750. Date Nonconforming Date Nonconforming July 6 47 July 23 37 7 42 26 39 8 48 27 51 9 58 28 44 12 32 29 61 13 38 30 48 14 53 Aug 2 56 15 68 3 48 16 45 4 40 19 37 5 47 20 57 6 25 21 38 9 35 22 53arrow_forwardA process screens a certain type of potash granule, resulting in a mean diameter of 0.067 cm and a standard deviation of 0.004 cm. The allowable variation in granule diameter is from 0.048cm to 0.087cm. Is the process capable? a. Cannnot be determined because sample size is not available b. Cannot be determined because USL and LSL information is not available c. Process is NOT capable d. Process is capablearrow_forward
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