Chapter Thirteen

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Chapter Thirteen
Chapter 13
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Figure 13.1 Relationship to the Previous
Chapters The Marketing Research Process
Figure 13.1 Relationship of Sample Size
Determination to the Previous Chapters and the
Marketing Research Process
Focus of This Chapter
Relationship to Previous Chapters
Relationship to Marketing Research Process
Figure 13.1 Relationship to the Previous
Chapters The Marketing Research Process

• Statistical Approach to Determining Sample Size
• Adjusting the Statistically Determined Sample Size

• Research Design Components (Chapter 3)
• Sampling Design Process (Chapter 12)

Problem Definition
Approach to Problem
Research Design
Field Work
Data Preparation and Analysis
Report Preparation and Presentation
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Figure 13.2 Final Initial Sample Size
Determination An Overview
Figure 13.2 Final and Initial Sample Size
Determination An Overview
Opening Vignette
Definitions and Symbols
Table 13.1
The Sampling Distribution
Appendix 13a
Fig 13a.1-13a.3
Statistical Approach to Determining Sample Size
Internet Applications
Focus on Elrick Lavidge
Fig 13.3
Confidence Interval Approach
Table 13.2
Fig 13.4
Means
Proportions
Adjusting the Statistically Determined Sample Size
Application to Contemporary Issues
TQM
International
Technology
Ethics
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Figure 13.3 The Confidence Interval Approach
Determining Sample Size
Figure 13.3 The Confidence Interval Approach and
Determining Sample Size
Confidence Interval Approach
Means
Proportions
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Figure 13.4 95 Confidence Interval
Figure 13.4 95 Confidence Interval
0.475
0.475
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Figure 13A.1 Finding Probabilities Corresponding
to Known Values
Figure 13A.1 Finding Probabilities Corresponding
to Known Values
Area is 0.3413
Area between µ and µ 1
s
0.3431
Area between µ and µ 2
s
0.4772
Area between µ and µ 3
s
0.4986
X Scale
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Figure 13A.2 Finding Values Corresponding to
Known Probabilities
Figure 13A.2 Finding Values Corresponding to
Known Probabilities
Area is 0.500
Area is 0.450
Area is 0.050
X Scale
X
50
Z Scale
-Z
0
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Figure 13A.3 Finding Values Corresponding to
Known Probabilities Confidence Interval
Figure 13A.3 Finding Values Corresponding to
Known Probabilities Confidence Interval
Area is 0.475
Area is 0.475
Area is 0.025
X Scale
X
50
Z Scale
Z
-Z
0
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Table 13.1 Symbols for Population and Sample
Variables
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Table 13.2 Sample Size Determination for Means
and Proportions