Difference between revisions of "Quiz reports"

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{{Quizzes}}
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{{Quiz}}
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In the course you are in, click on your quiz and go to ''Administration> Quiz administration > Results''
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This will open a submenu that offers reports on:
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* [[Quiz grades report|Grades report]]
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* [[Quiz responses report|Responses report]]
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* [[Quiz statistics report|Statistics report]]
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* [[Quiz manual grading report|Manual grading]]
  
The quiz '''Results''' tab includes several sub tabs, one for each report, plus a regrade and manual grading tabs. The number of subtabs shown, depends on the number of [http://moodle.org/mod/data/view.php?d=13&perpage=10&search=Quiz+report&sort=46&order=ASC report plugins] your Moodle administrator has installed.  
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You can also get to the quiz reports where you see a summary of the number of attempts that have been made like "Attempts: 123". That link also goes to the reports.
  
[[Image:Quiz Results overview tab.JPG|Center]]
 
  
==Overview==
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==Grades report==
The overview sub tab has some options to display lists of students who have taken the quiz. The list is displayed in this subtab.
 
  
===View of list===
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[[Quiz grades report|Grade reports]] shows all the students' quiz attempts, with the overall grade, and the grade for each question. There are links to review all the details of a student's attempt, just as the student would see it.
The list of quiz attempts arranged in four columns:
 
  
# '''First name / Surname'''
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There is a setting form at the top of the page that can be used to control what is displayed.
# '''Started on''' - that contains the information about the exact time the test was started
 
# '''Time taken''' - the amount of time it took a given student to do the test
 
# '''Grade/x''' - the number of points students scored; 'x' is the maximum number of points students could score
 
  
[[Image:Quiz Results overview List.JPG]]
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[[File:quizreportform1.png|thumb|500px|center|Form for selecting what to include in the report]]
  
===Overview list settings===
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The teacher can select from:
The default view lists only the students who attempted the test. You can, however, change the display settings checking either of the two boxes (followed by clicking Go):
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* enrolled users who have attempted the quiz;
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* enrolled users who have not attempted the quiz;
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* enrolled users who have, or have not, attempted the quiz;
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* all users who have attempted the quiz
  
# '''Which users to include - there are four options available:
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[[File:Quiz_result_report_min_6_col_report.png|thumb|500px|center|Report showing information for 3 students]]
#* Show Students with attempts only - list only the students on the course who have done test
 
#* Show Students with no attempts only - list students who have not yet attempted the quiz
 
#* Show all Students - list all the students on the course no matter if they did the test or not
 
#* Show all attempts - like 'Show Students with attempts only', but this also includes attempts by users who used to be students on the course, but have since been unenrolled.
 
# '''Show mark details''' - this extends the list with as many columns as there are questions in the test; each column is headed by 'n' (where 'n' stands for the question number)
 
  
With the Select all / Deselect all options you can check / uncheck all the names in the list, and, with selected, delete.
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The results can be downloaded in a variety of formats.
  
To sort the results by two columns, first click on the column heading you want to be the '''''second''''' key, and then click on the column heading you want to be the '''''primary''''' key.
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There is a setting form at the top of the page that can be used to control what is displayed.
===Download lists===
 
There are 3 buttons to download the list of students with quiz results. The teacher may select specific student attempts or select all.
 
  
==Regrade==
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At the bottom of the page is a graph showing the distribution of scores.
  
That tab will recalculate the quiz grades. This may become necessary if you have changed  one of the questions or the grade possible for the quiz or a question.
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There are check boxes to allow you to individually regrade or delete the selected attempts.
  
==Manual grading==
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By clicking on the score link, you are able to look at an individual student exam.
{{Moodle 1.6}}
 
The grade of any question in a quiz can be manually overridden, and a comment added. A teacher can do this from the review page. There are also some question types that Moodle does not grade automatically (at the moment only the Essay question). This report helps you grade questions of these types by listing just the questions that still need to be graded.
 
  
==Item analysis==
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==Responses report==
  
This table presents processed quiz data in a way suitable for analysing and judging the performance of each question for the function of assessment. The statistical parameters used are calculated as explained by classical test theory.  
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This is very similar to the Grades report, except that it shows the responses the students gave, rather than the marks they earned.
  
[[Image:Quiz Results ItemAnalysis example.JPG]]
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It is also possible to show the question text or the right answer, to compare with the student's response. This is helpful when the question is randomised.
  
* '''Facility Index (% Correct)'''
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For quizzes with interactive question behaviour, it is possible to display responses for the first, last or all tries a student makes:
  
This is a measure of how easy or difficult is a question for quiz-takers. It is calculated as:  
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{|
FI = (Xaverage) / Xmax
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| [[File:ShowResponses.png|thumb|350px|Selecting number of tries to display]]
where Xaverage is the mean credit obtained by all users attempting the item, and Xmax is the maximum credit achievable for that item. If questions can be distributed dicotomically into correct / incorrect categories, this parameter coincides with the percentage of users that answer the question correctly.  
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| [[File: ResponsesAllTries.png|thumb|350px|Displaying all tries]]
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|}
  
* '''Standard Deviation (SD)'''
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==Statistics report==
  
This parameter measures the spread of answers in the response population. If all users answers the same, then SD=0. SD is calculated as the statistical standard deviation for the sample of fractional scores (achieved/maximum) at each particular question.  
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This report gives a statistical (psychometric) analysis of the quiz, and the questions within it. The front page of this report gives a summary of the whole test. There are then links to drill down into a detailed analysis of a particular question.
  
* '''Discrimination Index (DI)'''
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The full report (overview, and detailed analysis of all questions) can be downloaded in a variety of formats, as can the quiz structure analysis table.
  
This provides a rough indicator of the performance of each item to separate proficient vs. less-proficient users. This parameter is calculated by first dividing learners into thirds based on the overall score in the quiz. Then the average score at the analysed item is calculated for the groups of top and bottom performers, and the average scored subtracted. The mathematical expression is:
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Please refer to [[Quiz statistics report]] for more detailed information about the different types of statistics that can be gathered via this link.
DI = (Xtop - Xbottom)/ N
 
where Xtop is the sum of the fractional credit (achieved/maximum) obtained at this item by the 1/3 of users having the highest grades in the whole quiz (i.e. number of correct responses in this group), and Xbottom is the analog sum for users with the lower 1/3 grades for the whole quiz.
 
  
This parameter can take values between +1 and -1. If the index goes below 0.0 it means that more of the weaker learners got the item right than the stronger learners. Such items should be discarded as worthless. In fact, they reduce the accuracy of the overall score for the quiz.
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==Manual grading report==
  
* '''Discrimination Coefficient (DC)'''
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The [[Quiz manual grading report]] makes it easy to manually grade questions in the quiz.
  
This is another measure of the separating power of the item to distinguish proficient from weak learners.
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The first screen of the report lists all the questions in the quiz that need to be, or have been, manually graded (for example essay questions) with the number of attempts. There is an option to also show the questions that have been automatically graded, which if useful if you ever need to edit the grades by hand.
The discrimination coefficient is a correlation coefficient between scores at the item and at the whole quiz. Here it is calculated as:
 
DC = Sum(xy)/ (N * sx * sy)
 
where Sum(xy) is the sum of the products of deviations for item scores and overall quiz scores,
 
N is the number of responses given to this question,
 
sx is the standard deviation of fractional scores for this question and,  
 
sy is the standard deviation of scores at the quiz as a whole.  
 
  
Again, this parameter can take values between +1 and -1. Positive values indicate items that do discriminate proficient learners, whereas negative indices mark items that are answered best by those with lowest grades. Items with negative DC are answered incorrectly by the seasoned learners and thus they are actually a penalty against the most proficient learners. Those items should be avoided.
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==See also==
  
* '''Quiz effectiveness'''
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* Details of the [[:dev:Quiz_statistics_calculations|Quiz statistics calculations]]
Both DC and DI can be used as powerful methods of evaluating the effectiveness of the quiz when assessing differentiation of learners. The advantage of using Discrimination Coefficient as opposed to Discrimination Index is that the former uses information from the whole population of learners, not just the extreme upper and lower thirds. Thus, this parameter may be more sensitive to detect item performance.
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* Contributed [http://moodle.org/plugins/browse.php?list=category&id=13 Quiz report plugins] available
  
==See also==
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[[Category:Report]]
  
*[[Detailed responses report plugin]]
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[[de:Test-Berichte]]
*[[Item analysis theoretical background]]
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[[es:Reportes de examen]]
[[Category:Teacher]]
 
[[Category:Quiz]]
 

Latest revision as of 10:54, 18 August 2016

In the course you are in, click on your quiz and go to Administration> Quiz administration > Results This will open a submenu that offers reports on:

You can also get to the quiz reports where you see a summary of the number of attempts that have been made like "Attempts: 123". That link also goes to the reports.


Grades report

Grade reports shows all the students' quiz attempts, with the overall grade, and the grade for each question. There are links to review all the details of a student's attempt, just as the student would see it.

There is a setting form at the top of the page that can be used to control what is displayed.

Form for selecting what to include in the report

The teacher can select from:

  • enrolled users who have attempted the quiz;
  • enrolled users who have not attempted the quiz;
  • enrolled users who have, or have not, attempted the quiz;
  • all users who have attempted the quiz
Report showing information for 3 students

The results can be downloaded in a variety of formats.

There is a setting form at the top of the page that can be used to control what is displayed.

At the bottom of the page is a graph showing the distribution of scores.

There are check boxes to allow you to individually regrade or delete the selected attempts.

By clicking on the score link, you are able to look at an individual student exam.

Responses report

This is very similar to the Grades report, except that it shows the responses the students gave, rather than the marks they earned.

It is also possible to show the question text or the right answer, to compare with the student's response. This is helpful when the question is randomised.

For quizzes with interactive question behaviour, it is possible to display responses for the first, last or all tries a student makes:

Selecting number of tries to display
Displaying all tries

Statistics report

This report gives a statistical (psychometric) analysis of the quiz, and the questions within it. The front page of this report gives a summary of the whole test. There are then links to drill down into a detailed analysis of a particular question.

The full report (overview, and detailed analysis of all questions) can be downloaded in a variety of formats, as can the quiz structure analysis table.

Please refer to Quiz statistics report for more detailed information about the different types of statistics that can be gathered via this link.

Manual grading report

The Quiz manual grading report makes it easy to manually grade questions in the quiz.

The first screen of the report lists all the questions in the quiz that need to be, or have been, manually graded (for example essay questions) with the number of attempts. There is an option to also show the questions that have been automatically graded, which if useful if you ever need to edit the grades by hand.

See also