Lte 5 presentation lte realibility -
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Lte 5 presentation lte realibility - Lte 5 presentation lte realibility - Presentation Transcript

  • An observed scoreconsists of a true scoreand error scoreRelationship betweentrue and error scores
  • Parallel TestBoth true scoresare equalTwo test are measures of thesame abilityBoth errorvariances are equalReliability as the correlationbetween parallel test
  • InternalConsistencyThe consistency of results acrossitems on the same test. the twoquestions are similar and designedto measure the same thing
  • RaterConsistencySplit-halfestimateCoefficientAlphaKuder-Richardsonreliabilitycoefficients
  • StabilityThe test-retestapproachStability of thetest scores overtimeWe administer the testtwice to the same groupsof individual
  • Giving a test by usingalternate forms of atest but have the samemeaningThe same difficultylevel and similarstandard deviations