# Guide to Using Excel 2007 For Basic Statistical Applications To Accompany Business Statistics: A Decision Making Approach, 8th Ed. Chapter 18: Introduction.

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Guide to Using Excel 2007 For Basic Statistical Applications To Accompany Business Statistics: A Decision Making Approach, 8th Ed. Chapter 18: Introduction to Quality and Statistical Process Control By Groebner, Shannon, Fry, & Smith Prentice-Hall Publishing Company Copyright, 2011

Chapter 18 Excel Examples X-bar and R-Charts X-bar and R-Charts X-bar and R-Charts X-bar and R-Charts Cattlemen’s Bar and Grill p-Charts p-Charts p-Charts Hilder’s Publishing Company c-Charts c-Charts c-Charts Chandler Tile Company

X-Bar and R-Charts - Cattlemen’s Bar and Grill Issue: In order to maintain its reputation for excellent food and service, the owners need to measure product and service quality on a regular basis. Objective: Use Excel 2007 to develop a procedure to visually monitor key measures of product and service quality. Data file is Cattlemen.xls

X-Bar and R Charts – Cattlemen’s Bar and Grill Open the file Cattlemen.xls

X-Bar and R Charts – Cattlemen’s Bar and Grill Note: In columns G and H Mean has been computed as: =AVERAGE(B1:E1) Range has been computed as: =(MAX(B1:E1)-(MIN(B1:E1))

X-Bar and R Charts – Cattlemen’s Bar and Grill Select the Add-Ins tab Select PHStat Select Control Charts Select R and XBar Charts

X-Bar and R Charts – Cattlemen’s Bar and Grill Subgroup/Sample Size = 4 Subgroup … Cell Range: H1:H31 Select First cell Contains labels Select R and XBar Charts Subgroup Means Cell Range: G1:G31 OK

X-Bar and R Charts – Cattlemen’s Bar and Grill R Chart

X-Bar and R Charts – Cattlemen’s Bar and Grill X-Bar Chart

p-Charts - Hilder’s Publishing Company Issue: The manager of the order entry department has decided to develop a process control chart to monitor the order entry errors. Objective: Use Excel 2007 to develop a procedure to visually monitor order entry form error percentage. Data file is Hilders.xls

p-Charts – Hilder’s Publishing Company Open the File Hilders.xls Select the Add-Ins Tab Select PHStat Select Control Charts Select p Chart

p-Charts – Hilder’s Publishing Company Non-Conformance cell range: C1:C31 Select First cell contains label Select Size does not vary Sample/Subgroup Size 100 Neither Excel nor the PHStat add-ins contain a Mann–Whitney U-test,

p-Charts – Hilder’s Publishing Company

c-Charts - Chandler Tile Company Issue: The company wants to develop a procedure to monitor the number of defects in its production of tiles. Objective: Use Excel 2007 to develop a procedure to visually monitor surface scratches in tile. Data file is Chandler.xls

c-Charts – Chandler Tile Company Open the file Chandler.xls Compute the average of Column C as shown.

c-Charts – Chandler Tile Company Compute the Upper Control limit using the formula shown. Copy and paste cells C1 and D1 through the bottom of the list

c-Charts – Chandler Tile Company Compute the Lower Control Limit as C2-(3*(SQRT(C2)) Since the result is negative load the value 0 into the column

c-Charts – Chandler Tile Company Highlight Columns B,C,D and E Select the Insert tab Click Line Chart

c-Charts – Chandler Tile Company Out of Control UCL=12.86 Avg C = 5.7 LCL = 0

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