Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion
Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion
9th Edition
ISBN: 9781119371618
Author: Roberta S. Russell
Publisher: Wiley (WileyPLUS Products)
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Chapter 3, Problem 30P
Summary Introduction

To draw: The process control chart and pattern test.

Introduction

p-chart is a control chart that is used for determining the flow of attributes in a process. p-chart determines the proportion of defects that occur in a process. The proportions of defects are checked with respect to the control limits of the process. Therefore, if a few sample observations shows the out of control situation, it simply means that quality improvement needs to be done.

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Boston Electric Generators has been getting many complaints from its major​ customer, Home​ Station, about the quality of its shipments of home generators. Daniel​ Shimshak, the plant​ manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at​ customers' stores. The forms for the first 287 shipments have been turned in. They show the following over the past 8​ weeks:   Week No. of Shipments No. of Shipments with Defects 1 23 10 2 31 11 3 32 12 4 39 13 5 35 12 6 40 14 7 41 14 8 46 17   This exercise contains only part a.   ​a) Using the point drawing tool eight​ times, develop a scatter diagram using total number of shipments and number of defective shipments. Part 2
Boston Electric Generators has been getting many complaints from its major customer, Home Station, about the quality of its shipments of home generators. Daniel Shimshak, the plant manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at customers' stores. The forms for the first 285 shipments have been turned in. They show the following over the past 8 weeks: Week 1 234567 8 This exercise contains only part c. No. of Shipments 23 31 30 37 35 42 43 44 No. of Shipments Incorrect with Bill of Defects 10 11 11 12 12 14 15 16 Reason for Defective Shipment Lading 4 1 3 4 5 4 Incorrect Damaged Trucks Truckload Product Late 4 5 5 4 5668 2 7212N 3 AN 4 2 0 4 3111C 2
Boston Electric Generators has been getting many complaints from its major customer, Home Station, about the quality of its shipments of home generators. Daniel Shimshak, the plant manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at customers' stores. The forms for the first 283 shipments have been turned in. They show the following over the past 8 weeks: Reason for Defective Shipment A. 50- 40- 30- 20- 10- 0- Number of defects A B C D A: Incorrect bill of lading B: Trucks late C: Incorrect truckload D: Damaged product O B. Week 1 This exercise contains only part c. c) Choose the correct Pareto chart for the type of defects that have occurred. 50- 40- 30- 20- 10- 0- 2345∞ 6 7 8 No. of Shipments 23 29 30 37 35 42 元 41 46 Number of defects A B C D A: Incorrect bill of lading B: Trucks late C: Damaged…

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Operations and Supply Chain Management, 9th Edition WileyPLUS Registration Card + Loose-leaf Print Companion

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