Here's a screen shot of the detailed statistics for a quiz I've given to my students.
There is something I don't understand here. Why is the first column showing 100% correct for the right answer whereas the second column is showing only 80% for the answer that is the correct answer in that case?
I haven't included a screenshot for the whole report because it would take so much space but the question in the first column was answered correctly by 6 out of 10 students, whereas the one in the second column was answered correctly by 7 out 10.
I can understand the analysis that appears further down in the entries 'average' (86% for the first column, 73% for the second one) and 'percent correct' ( 60% for the first column and 70% for the second one). However, I having a hard time understanding what these percentages (100% and 80% in red) do. I don't know interpret them.
Can anybody enlighten me?
This time I have checked the help files before asking .
The above is only the same as "80% of the students in the class" when there is exactly one attempt by each student listed in the report, and each student attempted this question.
hope that helps
Strange. Why would this percentage be considered necessary? If we have a choice between the scores for the "first attempt", for the "last attempt" or the average, that's all we would need, right? They still don't make much sense to me even if I now know where they come from.
Oh well, never mind. I'm OK with the other figures that I understand but I was just curious about those percentages.
> So this only takes into account cases
> where there was only one attempt?
No. It takes into account all attempts that are in the report that is currently being displayed which include an attempt at this question
> In other words, results from students
> that have attempted to do the quiz more
> than once are excluded from this computation?
No. Each attempt in the report that is being displayed and which includes a response to this question is included in the computation. If there are several attempts at this quiz for a given student, and each of those attempts include a response to this question, then all that student's attempts will be included in the computation.
I think I need to make some examples and add them to the Moodle Docs
It is a strange measure, though. I don't understand why this information would be useful. To me perhaps it confuses more than it helps but that's just my opinion.
The 100% here means that correct response X was selected by 100% of the students but it only means that at some point or another they clicked on this response. This measure then doesn't care whether the selection was in their first attempt or in their last attempt. As long as they clicked on it, it will count.
I'm just trying to understand, that's all. I figure if it is there it must be for some reason But I can't understand why anyone would need these percentages to appear at all.
> why this information would be useful.
I don't think it is a strange measure, because of the fact that on Hot Potatoes quizzes the teacher can specify that not all questions be used. If you specify that only 5 out of 10 questions be used in a quiz, it would be misleading to say that "45%" of the class chose answer "A" on the first question, because not all the students in the class would have been presented with that question in the quiz. It is more useful to say "90% of the students who were presented with this question, chose answer A". That is why these percentages only deal with students who are known to have attempted this question.
> The 100% here means that correct response X
> was selected by 100% of the students
Strictly speaking, "100%" means "100% of the students who were presented with this question". If your quiz always presents all questions to all students, then "100%" means what you think it does.
> This measure then doesn't care whether
> the selection was in their first attempt
> or in their last attempt. As long as they
> clicked on it, it will count.
That's right. Two points to note are:
- once a correct response has been given, then the question is flagged as having been correctly answered and no more responses are logged. Therefore, the correct response is always the last one given to a question.
- if you want to know the order of responses, the "click report" may help. I know the "click report" has far too much data to make sense of in a browser window, but if you download in Excel format, you can play about with the data in your favorite spreadsheet program.
> need these percentages to appear at all.
They are meant as a guide to show the teacher how questions are commonly answered. They are especially useful for showing common mistakes (=wrong answers) as these give feedback to the teacher on weak points of the class as a whole.
all the best
OK, that changes everything. I didn't know that. And how do you mark questions that are not to be used? I haven't seen any way of doing this in jquiz.
I'm sure you do know what I'm talking about I just haven't used the right terminology. On the "Options" menu for JQuiz, choose "Configure Output" and then search through the tabs for a field which allows you to set how many of the questions you wish to be displayed on each attempt at the quiz. For example if you have a quiz containing 10 questions, and specify that only 5 should be shown on each attempt, then Hot Potatoes will randomly select 5 from the 10. Each student will get a different 5 questions.