Post on 10-Feb-2017
transcript
Welcome to
[ ]Dr. Myrza Rahmanita, SE, M.ScMeasurement
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MEASUREMENT
FIRST LET’S WE SEE ABOUTThe Learning Objectives
The distinction between measuring objects, properties, and indicants of properties.
The similarities and differences between the four scale types used in measurement and when each is used.
The four major sources of measurement error.
The criteria for evaluating good measurement.
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MEASUREMENT
11-5
Selectmeasurable phenomena
Develop a set of mapping rules
Apply the mapping ruleto each phenomenon
As Shown in the diagram below …
CHARACTERISTICof Measurement
11-7
As Shown in the explanation below …
LEVELof Measurement
11-9
Ordinal
Interval
Ratio
Nominal Classification
As Shown in the diagram below …
TYPESof Scales
11-11
Ordinal
Interval
Nominal
Ratio
As Shown in the diagram below …
NOMINALScales
11-13
MUTUALLY EXCLUSIVE AND,COLLECTIVELY EXHAUSTIVE
CATEGORIES,EXHIBITS ONLY CLASSIFICATION
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LEVELof Measurement
11-15
Ordinal
interval
Ratio
Nominal Classification
OrderClassification
As Shown in the diagram below …
ORDINALScales
•Characteristics of nominal scale •Order•Implies greater than or less than
11-17
As Shown in the explanation below …
LEVELof Measurement
11-19
Ordinal
interval
Ratio
Nominal Classification
OrderClassification
OrderClassification Distance
As Shown in the diagram below …
ORDINALScales
• Characteristics of nominal and ordinal scales • Equality of interval. • Equal distance between numbers
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LEVELof Measurement
11-23
Ordinal
interval
Ratio
Nominal Classification
OrderClassification
OrderClassification Distance
Natural Origin
OrderClassification Distance
As Shown in the diagram below …
RATIOScales
Ratio Scales
11-25
Characteristics of nominal, ordinal, interval scalesAbsolute zero
FROM INVESTIGATEto Measurement Question
11-27
As Shown in the diagram below …
SOURCESof Error
11-29
Respondent
InstrumentMeasurer
Situation
As Shown in the diagram below …
EVALUATING MEASUREMENTTools
11-31
Criteria
Validity
Practicality Reliability
As Shown in the diagram below …
VALIDITYDeterminants
11-33
Content
ConstructCriterion
As Shown in the diagram below …
INCREASINGContent Validity
Increasing Content Validity
11-35
ContentLiterature Search
Expert Interviews
Group Interviews
Question Database
Etc.
As Shown in the diagram below …
VALIDITYDeterminants
11-37
Content
Construct
As Shown in the diagram below …
INCREASINGConstruct Validity
11-39
New measure of trust
Known measure of trust
Empathy
Credibility
As Shown in the diagram below …
VALIDITYDeterminants
11-41
Content
ConstructCriterion
As Shown in the diagram below …
JUDGING CRITERIONValidity
11-43
Relevance
Freedom from bias
Reliability
Availability
Criterion
As Shown in the diagram below …
UNDERSTANDINGValidity and Reliability
11-45
As Shown in the diagram below …
RELIABILITYEstimates
11-47
Stability
InternalConsistency Equivalence
As Shown in the diagram below …
PRACTICALLY
11-49
Economy InterpretabilityConvenience
As Shown in the diagram below …
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Last is Key TermsRemembering the Words beside …
• Internal validity• Interval scale• Mapping rules• Measurement• Nominal scale• Objects• Ordinal scale• Practicality• Properties
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Last is Key TermsRemembering the Words beside …
• Ratio scale• ReliabilityEquivalenceInternal consistencyStability• ValidityConstructContentsCriterion-related