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stats_item_group [2017/02/13 11:08] 127.0.0.1 external edit |
stats_item_group [2017/02/13 11:36] (current) steveclarke |
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| - | ====== Item Statistics and Results ====== | + | ====== Item Group Statistics and Results ====== |
| - | Table: **ceStatsExamQuestion** | + | Table: **ceStatsExamQuestionGroup** |
| - | Aggregate of [[stats_candidate_item|Candidate Item Stats]] for each Item on the Exam. | + | Aggregate of [[Stats_Item|Item Stats]], grouped by Item Group. |
| ^Field^Description^ | ^Field^Description^ | ||
| |StatsID|Unique Identifier for this set of Statistics| | |StatsID|Unique Identifier for this set of Statistics| | ||
| - | |QuestionID|ID of Item in the Bank| | + | |GroupID|ID of Item Group Items are linked to| |
| - | |Sequence|Sequence of Item on the Exam| | + | |QtyQuestions|Count of all Items on Exam in this Group| |
| - | |ValueMax|Maximum achievable points for Item| | + | |QtyCorrect|Total of all QtyCorrect for all Items in this Group| |
| - | |QtyCorrect|Total of all QtyCorrect for Item for all Candidates| | + | |QtySkipped|Total of all QtySkipped for all Items in this Group| |
| - | |QtySkipped|Total of all QtySkipped for Item for all Candidates| | + | |QtyIncorrect|Total of all QtyIncorrect for all Items in this Group| |
| - | |QtyIncorrect|Total of all QtyIncorrect for Item for all Candidates| | + | |RawPercent|x = Count of Correct Items in Group \\ n = Count of Candidates on Exam \\ k = Count of Items in Group \\ \\ {{:stat_rawpercent.png|}}| |
| - | |RawPercent|x = Count of Correct Items on Exam \\ n = Count of Candidates on Exam \\ \\ {{:stat_rawpercent_candidate.png|}}| | + | |ValueCorrect|Total of all ValueCorrect for all Items in this Group| |
| - | |ValueCorrect|Total of all ValueCorrect for Item for all Candidates| | + | |ValueSkipped|Total of all ValueSkipped for all Items in this Group| |
| - | |ValueSkipped|Total of all ValueSkipped for Item for all Candidates| | + | |ValueIncorrect|Total of all ValueIncorrect for all Items in this Group| |
| - | |ValueIncorrect|Total of all ValueIncorrect for Item for all Candidates| | + | |
| |ValueTotal|(ValueCorrect + ValueSkipped + ValueIncorrect)| | |ValueTotal|(ValueCorrect + ValueSkipped + ValueIncorrect)| | ||
| |ValuePercent|{{:stat_valuepercent.png|}}| | |ValuePercent|{{:stat_valuepercent.png|}}| | ||
| - | |Difficulty|x = Count of Correct Items on Exam \\ n = Count of Candidates on Exam \\ \\ {{:stat_difficulty_candidate.png|}}| | + | |Difficulty|x = Count of Correct Items in Group \\ n = Count of Candidates on Exam \\ k = Count of Items in Group \\ \\ {{:stat_difficulty.png|}}| |
| - | |QuestionDiscrimination|A value between -1 and 1 \\ \\ Q1 is the Count of Candidates who responded correctly to Item whose Value total is in the top 27% of all Candidates taking the Exam. \\ Q4 is the Count of Candidates who responded correctly to Item whose Value total is in the top 27% of all Candidates taking the Exam. \\ n = Count of Candidates \\ \\ {{:stat_questiondiscrimination.png|}}| | + | |ValueMax|Maximum achievable points for Group from sum off all Value Max of Items in Group| |
| - | |BiserialExam|FIXME biserials| | + | |ValueHigh|Highest ValueTotal achieved by a Candidate for this Group| |
| - | |PointBiserialExam|m1 = Mean of correct on Exam for all Candidates that answered correctly. \\ m0 = Mean of correct on Exam for all \\ Candidates that answered incorrectly. \\ n1 = Count of all Candidates that answered correctly. \\ n0 = Count of all Candidates that answered incorrectly. \\ s = Standard deviation of Candidate correct on Exam \\ n = Total number of Candidates on Exam \\ \\ {{:stat_pointbiserial.png|}}| | + | |ValueLow|Lowest ValueTotal achieved by a Candidate for this Group| |
| - | |BiserialCorrectedExam|FIXME biserials| | + | |ValueMean|Mean (average) ValueTotal achieved by a Candidate for this Group| |
| - | |PointBiserialCorrectedExam|FIXME biserials| | + | |ValueStdev|Standard Deviation of ValueTotal for all Candidates for this Group| |
| - | |BiserialSection|FIXME biserials| | + | |ValueVariance|Variance of ValueTotal for all Candidates for this Group| |
| - | |PointBiserialSection|m1 = Mean of correct on Exam for all Candidates that answered correctly. \\ m0 = Mean of correct on Exam for all \\ Candidates that answered incorrectly. \\ n1 = Count of all Candidates that answered correctly. \\ n0 = Count of all Candidates that answered incorrectly. \\ s = Standard deviation of Candidate correct on Exam \\ n = Total number of Candidates on Exam \\ \\ {{:stat_pointbiserial.png|}}| | + | |ValueMedian|Median (middle) ValueTotal for all Candidates for this Group| |
| - | |BiserialCorrectedSection|FIXME biserials| | + | |ValueMode|Mode (most frequent) ValueTotal for all Candidates for this Group| |
| - | |PointBiserialCorrectedSection|FIXME biserials| | + | |
| - | |BiserialCompetency|FIXME biserials| | + | |
| - | |PointBiserialCompetency|m1 = Mean of correct on Exam for all Candidates that answered correctly. \\ m0 = Mean of correct on Exam for all \\ Candidates that answered incorrectly. \\ n1 = Count of all Candidates that answered correctly. \\ n0 = Count of all Candidates that answered incorrectly. \\ s = Standard deviation of Candidate correct on Exam \\ n = Total number of Candidates on Exam \\ \\ {{:stat_pointbiserial.png|}}| | + | |
| - | |BiserialCorrectedCompetency|FIXME biserials| | + | |
| - | |PointBiserialCorrectedCompetency|FIXME biserials| | + | |
| - | |ValueLow|Lowest ValueTotal achieved by a Candidate for this Item| | + | |
| - | |ValueHigh|Highest ValueTotal achieved by a Candidate for this Item| | + | |
| - | |ValueMean|Mean (average) ValueTotal achieved by a Candidate for this Item| | + | |
| - | |ValueStdev|Standard Deviation of ValueTotal for all Candidates for this Item| | + | |
| - | |ValueVariance|Variance of ValueTotal for all Candidates for this Item| | + | |
| - | |ValueMedian|Median (middle) ValueTotal for all Candidates for this Item| | + | |
| - | |ValueMode|Mode (most frequent) ValueTotal for all Candidates for this Item| | + | |
| - | |QtyCorrectTop50|Count of Candidates who responded correctly to Item whose Value total was in top 50% of all Candidates taking Exam| | + | |
| - | |QtyCorrectBottom50|Count of Candidates who responded incorrectly to Item whose Value total was in top 50% of all Candidates taking Exam| | + | |
| - | |TimeTotal|Total Time for all Candidates on this Item. Used in Online testing FIXME link| | + | |
| - | |Dichotomous|True if Item has one correct response worth 1 point and all other responses are incorrect worth 0 points.| | + | |
| - | |IncludeInStats|FIXME explain| | + | |
| - | |PROXScore|Future use| | + | |
| - | |PROXProportion|Future use| | + | |
| - | |PROXLogit|Future use| | + | |
| - | |PROXCalibration|Future use| | + | |
| - | |PROXCalibrationFinal|Future use| | + | |
| - | |PROXCalibrationError |Future use| | + | |
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