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stats_section [2017/02/13 11:46] steveclarke |
stats_section [2017/06/07 09:52] (current) 72.38.112.148 |
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| |ValueMode|Mode (most frequent) ValueTotal for all Candidates for this Section| | |ValueMode|Mode (most frequent) ValueTotal for all Candidates for this Section| | ||
| |KuderRichardson20|k = Count of Items in Section \\ Total Section Variance = Variance of Candidate Raw Scores for Section \\ Sum of p*q = sum of all items p (difficulty) * q (1-p) for all items in Section \\ \\ {{:stat_kr20.png|}}| | |KuderRichardson20|k = Count of Items in Section \\ Total Section Variance = Variance of Candidate Raw Scores for Section \\ Sum of p*q = sum of all items p (difficulty) * q (1-p) for all items in Section \\ \\ {{:stat_kr20.png|}}| | ||
| - | |StandardError|s = StDev of QtyCorrect for Section \\ n = Count of Candidates \\ {{:stat_stderr.png|}}| | + | |StandardErrorMean|s = StDev of QtyCorrect for Section \\ n = Count of Candidates \\ {{:stat_stderr.png|}}| |
| + | |StandardErrorMeasurement|s = StDev of QtyCorrect for Section \\ n = Count of Candidates \\ kr20 = Kuder Richardson 20 \\ {{:stat_stderrmeasurement.png|}}| | ||
| |Skewness|n = Count of Candidates \\ xi = QtyCorrect for each Candidate in Section \\ x = Mean of QtyCorrect in Section \\ s = StDev of QtyCorrect in Section \\ \\ {{:stat_skewness_1.png|}} \\ \\ Calculate Population Skewness using Sample Skewness \\ \\ {{:stat_skewness_2.png|}}| | |Skewness|n = Count of Candidates \\ xi = QtyCorrect for each Candidate in Section \\ x = Mean of QtyCorrect in Section \\ s = StDev of QtyCorrect in Section \\ \\ {{:stat_skewness_1.png|}} \\ \\ Calculate Population Skewness using Sample Skewness \\ \\ {{:stat_skewness_2.png|}}| | ||
| |Kurtosis|n = Count of Candidates \\ xi = QtyCorrect for each Candidate in Section \\ x = Mean of QtyCorrect for Section \\ s = StDev of QtyCorrect for Section \\ \\ Calculate Sample Kurtosis {{:stat_kurtosis_1.png|}} \\ \\ Calculate Population Kurtosis using Sample Kurtosis \\ \\ {{:stat_kurtosis_2.png|}}| | |Kurtosis|n = Count of Candidates \\ xi = QtyCorrect for each Candidate in Section \\ x = Mean of QtyCorrect for Section \\ s = StDev of QtyCorrect for Section \\ \\ Calculate Sample Kurtosis {{:stat_kurtosis_1.png|}} \\ \\ Calculate Population Kurtosis using Sample Kurtosis \\ \\ {{:stat_kurtosis_2.png|}}| | ||
