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Chapter 11

Chapter 11. Measurement. Why Measurement Is Important. “If you can’t measure it, you can’t manage it.” Bob Donath, Bob Donath and Co, Inc. Measurement. Selecting measurable phenomena. Developing a set of mapping rules. Applying the mapping rule to each phenomenon.

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Chapter 11

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  1. Chapter 11 Measurement

  2. Why Measurement Is Important “If you can’t measure it, you can’t manage it.” Bob Donath, Bob Donath and Co, Inc

  3. Measurement Selecting measurable phenomena Developing a set of mapping rules Applying the mapping rule to each phenomenon

  4. Characteristics of Measurement

  5. Levels of Measurement Nominal Classification Ordinal interval Ratio

  6. Types of Scales Nominal Ordinal interval Ratio

  7. Nominal Scales • Mutually exclusive and collectively exhaustive categories • Exhibits the classificationcharacteristic only

  8. Levels of Measurement Nominal Classification Ordinal Classification Order interval Ratio

  9. Ordinal Scales • Characteristics of nominal scale plus an indication of order • Implies statement of greater than and less than

  10. Levels of Measurement Nominal Classification Ordinal Classification Order interval Classification Distance Order Ratio

  11. Interval Scales • Characteristics of nominal and ordinal scales plus the concept of equality of interval. • Equal distance exists between numbers

  12. Levels of Measurement Nominal Classification Ordinal Classification Order interval Classification Distance Order Ratio Classification Distance Order Natural Origin

  13. Ratio Scales • Characteristics of previous scales plus an absolute zero point • Examples • Weight • Height • Number of children

  14. Validity Reliability Practicality Evaluating Measurement Tools Criteria

  15. Validity Determinants Content Criterion Construct

  16. Increasing Content Validity Content Literature Search Etc. Expert Interviews Question Database Group Interviews

  17. Validity Determinants Content Construct

  18. Validity Determinants Content Criterion Construct

  19. JudgingCriterion Validity Relevance Criterion Freedom from bias Reliability Availability

  20. Understanding Validity and Reliability

  21. Reliability Estimates Stability Internal Consistency Equivalence

  22. Reliability Estimates Stability Internal Consistency Equivalence

  23. Reliability Estimates Stability Internal Consistency Equivalence

  24. Reliability Estimates Stability Internal Consistency Equivalence

  25. Practicality Economy Convenience Interpretability

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