08. measurement (print).ppt
TRANSCRIPT
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12-1
Chapter 12
Measurement
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12-2
Types of Scales
Ordinal
interval
Ratio
Nominal
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12-3
Levels of Measurement
Ordinal
interval
Ratio
NominalClassification
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12-4
Nominal Scales
Mutually exclusive
and collectively
exhaustive categories
Exhibits theclassification
characteristic only
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12-5
Levels of Measurement
Ordinal
interval
Ratio
NominalClassification
Order
Classification
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12-6
Ordinal Scales
Characteristics of
nominal scale plus an
indication of order
Implies statement ofgreater than and less
than
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12-7
Levels of Measurement
Ordinal
interval
Ratio
NominalClassification
Order
Classification
Order
Classification Distance
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12-8
Interval Scales
Characteristics of
nominal and ordinal
scales plus the
concept of equality ofinterval.
Equal distance exists
between numbers
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12-9
Levels of Measurement
Ordinal
interval
Ratio
NominalClassification
Order
Classification
Order
Classification Distance
Natural Origin
Order
Classification Distance
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12-10
Ratio Scales
Characteristics of
previous scales plus
an absolute zero point Examples
Weight
Height
Number of children
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12-11
Sources of Error
Respondent
InstrumentMeasurer
Situation
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12-12
Evaluating
Measurement Tools
Criteria
Validity
Practicality Reliability
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12-13
Validity Determinants
Content
ConstructCriterion
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12-14
Increasing Content Validity
ContentLiterature
Search
Expert
Interviews
Group
Interviews
Question
Database
Etc.
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12-15
Validity Determinants
Content
Construct
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12-16
Increasing Construct
Validity
New measure of trust
Known measure of trust
Empathy
Credibility
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12-17
Validity Determinants
Content
ConstructCriterion
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12-18
Judging Criterion Validity
Relevance
Freedom from bias
Reliability
Availability
Criterion
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12-19
Exhibit 12-6 Understanding
Validity and Reliability
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Reliability Estimates
Stability
Internal
Consistency
Equivalence
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12-21
Reliability Estimates
Stability
Internal
Consistency
Equivalence
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12-22
Reliability Estimates
Stability
Internal
Consistency
Equivalence
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Reliability Estimates
Stability
Internal
Consistency
Equivalence