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In this paper I discuss a way to combine quality focused techniques such as Control Charts, Control Limits, Reduced Inspection and Sampling to the test function. The paper introduces seven quality concepts not usually seen within a software test environment and demonstrates one way Quality and Testing can be combined.

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Paper 11
Measuring Quality

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Pages: 9

Authors: Mark Crowther

Table of Contents:

1.0 Introduction ................................................................................ 2

1.1 Measuring Quality

2.0 The Quality Value (QV) ............................................................. 3

2.1 Measuring and Defining Quality, numerically
2.2 Test Cycle Calculations

3.0 Measure of Quality (MQ) and Level of Quality (LQ) ........... 4

3.1 An ongoing measure
3.2 Level of Quality (LQ)

4.0 Using the Approach .................................................................. 5

4.1 Chart the Data
4.2 The Control Chart
4.3 The UCL
4.4 The LCL
4.5 Base-Lining the QV
4.6 Data Sources

5.0 Test Frequency ......................................................................... 7

5.1 Setting the Start Frequency
5.2 Increasing the Test Frequency
5.3 Reducing the Test Frequency

6.0 The Cost of Quality .................................................................... 7

6.1 Reduced testing brings reduced cost

7.0 Definitions of Key Elements .................................................... 8

7.1 100 Quality Value
7.2 -QValue
7.3 Lower Control Limit
7.4 UpperControl Limit
7.5 x QV
7.6 Measure of Quality (MQ)
7.7 Level of Quality (LQ)
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