Field | Description |
StatsID | Unique Identifier for this set of Statistics |
SectionID | ID of Section all Items are a member of |
QtyQuestions | Count of all Items in this Section |
QtyCorrect | Total of all QtyCorrect for all Items in this Section |
QtySkipped | Total of all QtySkipped for all Items in this Section |
QtyIncorrect | Total of all QtyIncorrect for all Items in this Section |
RawPercent | x = Count of Correct Items in Section
n = Count of Candidates on Exam
k = Count of Items in Section
|
ValueCorrect | Total of all ValueCorrect for all Items in this Section |
ValueSkipped | Total of all ValueSkipped for all Items in this Section |
ValueIncorrect | Total of all ValueIncorrect for all Items in this Section |
ValueTotal | (ValueCorrect + ValueSkipped + ValueIncorrect) |
ValuePercent | |
Difficulty | x = Count of Correct Items in Section
n = Count of Candidates on Exam
k = Count of Items in Section
|
RawHigh | Highest QtyCorrect achieved by a Candidate for this Section |
RawLow | Lowest QtyCorrect achieved by a Candidate for this Section |
RawMean | Mean (average) QtyCorrect achieved by a Candidate for this Section |
RawVariance | Variance of QtyCorrect for all Candidates for this Section |
RawStdev | Standard Deviation of QtyCorrect for all Candidates for this Section |
ValueMax | Maximum achievable points for Group from sum off all Value Max of Items in Section |
ValueHigh | Highest ValueTotal achieved by a Candidate for this Section |
ValueLow | Lowest ValueTotal achieved by a Candidate for this Section |
ValueMean | Mean (average) ValueTotal achieved by a Candidate for this Section |
ValueStdev | Standard Deviation of ValueTotal for all Candidates for this Section |
ValueVariance | Variance of ValueTotal for all Candidates for this Section |
ValueMedian | Median (middle) 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
|
StandardErrorMean | s = StDev of QtyCorrect for Section
n = Count of Candidates
|
StandardErrorMeasurement | s = StDev of QtyCorrect for Section
n = Count of Candidates
kr20 = Kuder Richardson 20
|
Skewness | n = Count of Candidates
xi = QtyCorrect for each Candidate in Section
x = Mean of QtyCorrect in Section
s = StDev of QtyCorrect in Section
Calculate Population Skewness using Sample Skewness
|
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
Calculate Population Kurtosis using Sample Kurtosis
|