Transcription of Calculating Reliability of Quantitative Measures
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Calculating Reliability of Quantitative Measures
1 Calculating Reliability ofQuantitative MeasuresDr. K. A. KorbUniversity of JosReliability Overview Reliability is defined as the consistency of results from a test. Theoretically, each test contains some error the portion of the score on the test that is not relevant to the construct that you hope to measure. Error could be the result of poor test construction, distractions from when the participant took the measure, or how the results from the assessment were marked. Reliability indexes thus try to determine the proportion of the test score that is due to K. A. KorbUniversity of Jos2 Reliability There are four methods of evaluating the Reliability of an instrument: Split-Half Reliability : Determines how much error in a test score is due to poor test construction.
8 The variation of the Total Exam Score is the squared standard deviation. I discussed calculating the standard deviation in the example of a Descriptive Research Study in side 34.
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