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stats_exam [2017/03/14 14:08] steveclarke |
stats_exam [2017/06/07 09:53] (current) 72.38.112.148 |
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| |KuderRichardson21|qtyX = Count Items answered correctly on Exam \\ x ̅ = Mean of QtyCorrect for each Candidate on Exam \\ s = StDev of Raw Scores of all Candidates on Exam \\ \\ {{:stat_kr21.png|}}| | |KuderRichardson21|qtyX = Count Items answered correctly on Exam \\ x ̅ = Mean of QtyCorrect for each Candidate on Exam \\ s = StDev of Raw Scores of all Candidates on Exam \\ \\ {{:stat_kr21.png|}}| | ||
| |StandardError|s = StDev of QtyCorrect for Exam \\ n = Count of Candidates \\ {{:stat_stderr.png|}}| | |StandardError|s = StDev of QtyCorrect for Exam \\ n = Count of Candidates \\ {{:stat_stderr.png|}}| | ||
| + | |StandardErrorMeasurement|s = StDev of QtyCorrect for Exam \\ n = Count of Candidates \\ kr20 = Kuder Richardson 20 \\ {{:stat_stderrmeasurement.png|}}| | ||
| |AlphaCoefficient|k = Count of Items on Exam \\ Total Test Variance = Variance of Candidate Raw Scores \\ Sum of Item Variance = Sum of all item variances on Exam \\ \\ {{:stat_alphacoefficient.png|}}| | |AlphaCoefficient|k = Count of Items on Exam \\ Total Test Variance = Variance of Candidate Raw Scores \\ Sum of Item Variance = Sum of all item variances on Exam \\ \\ {{:stat_alphacoefficient.png|}}| | ||
| |Skewness|n = Count of Candidates \\ xi = QtyCorrect for each Candidate on Exam \\ x ̅ = Mean of QtyCorrect on Exam \\ s = StDev of QtyCorrect on Exam \\ \\ {{:stat_skewness_1.png|}} \\ \\ Calculate Population Skewness using Sample Skewness \\ \\ {{:stat_skewness_2.png|}}| | |Skewness|n = Count of Candidates \\ xi = QtyCorrect for each Candidate on Exam \\ x ̅ = Mean of QtyCorrect on Exam \\ s = StDev of QtyCorrect on Exam \\ \\ {{:stat_skewness_1.png|}} \\ \\ Calculate Population Skewness using Sample Skewness \\ \\ {{:stat_skewness_2.png|}}| | ||
