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The DissertationFrom Beginning to End$
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Peter Lyons and Howard J. Doueck

Print publication date: 2009

Print ISBN-13: 9780195373912

Published to Oxford Scholarship Online: February 2010

DOI: 10.1093/acprof:oso/9780195373912.001.0001

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Sampling and Measurement

Sampling and Measurement

(p.109) Chapter 5 Sampling and Measurement
The Dissertation

Peter Lyons

Howard J. Doueck

Oxford University Press

This chapter examines participant selection, sampling design, sample size and sampling error; as well as the importance of statistical power, effect size, confidence levels, and confidence intervals. Types of sampling, including probability and nonprobability sampling methods, are discussed in relation to both quantitative and qualitative research designs. The measurement properties of instruments including requirements of validity and reliability as well as issues in measurement with human measures (credibility, inquiry audits, and triangulation) are presented.

Keywords:   participant selection, sampling design, sample size, sampling error, statistical power, effect size, confidence levels, confidence intervals, psychometric properties, reliability, validity

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