Probability statistics for engineers and scientists 9th by walpole myers chapter 17

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Chapter 17

Statistical

Quality Control

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Section 15.1

Introduction

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Figure 17.1 Typical Control Chart

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Section 17.2

Nature of the

Control Limits

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Section 17.3

Purposes of the Control Chart

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Section 17.4

Control Charts for Variables

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Figure 17.2 The 3  control limits

for the engine part example

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Table 17.1 Sample Information on

Tensile Strength Data

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Figure 17.3 R-chart for the tensile

strength example

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Figure 17.4 X-chart for the tensile

strength example

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Figure 17.5 Operating characteristic curves for the

X-chart with 3 limits Here  is the type II probability

error on the first sample after a shift in the mean of r

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Figure 17.6 Operating characteristic

curve for the R-charts with 3  limits

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Section 17.5

Control Charts for Attributes

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Table 17.2 Volume of Containers for 25

Samples in a Preliminary Sample

(in cubic centimeters)

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Figure 17.7 The X-chart with control

limits established by the data of Example

17.2

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Figure 17.8 The S-chart with control

limits established by the data of Example

17.2

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Table 17.3 Data for Example 17.3 to

Establish Control Limits for p-Charts,

Samples of Size 50

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Table 17.4 Data for Example 17.5;

Control Involves Number of Defects in

Sheet Metal Rolls

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Table 17.5 Additional Data from the

Production Process of Example 17.5

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Figure 17.9 Preliminary data plotted on

the control chart for Example 17.5

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Figure 17.10 Additional production

data for Example 17.5

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Section 17.6

Cusum Control

Charts

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