Grade multiple-choice questions that have a range of answers (using tick-boxes), rather than just a single answer (option-buttons)

It would be great to have Flubaroo mark a multiple-choice question that has 
multiple correct answers, i.e. one based on tick-boxes rather than 
radio-buttons (see the attached example).

The problem I have is that unless a student selects the precise set of correct 
answers, they presently get 0, as their answer doesn’t match mine.

e.g. For the attached example question…

My answer: <meta charset="utf-8">, <title> ... </title>, <link rel="stylesheet" 
… >
Student answer: <meta charset="utf-8">, <title> ... </title>, <link 
rel="stylesheet" … >, <html> …</html>

Ideally, the individual answers (comma separated) would be matched, and a % of 
correctness determined.

e.g. For the above question…

8 answers: some should be ticked, and some not
Every correctly ticked one gains 1/8 correctness
Every correctly un-ticked one gains 1/8 correctness

The above student had 3 correctly ticked (3/8), 4 correctly untucked (4/8), and 
1 incorrectly ticked (0/8)
Resulting in a score of 3/8 + 4/8 = 7/8 correct

For a question weighted at 4 marks, this would give them a final mark of 7/8 * 
4 = 3.5

Best regards

Steve C.

Original issue reported on code.google.com by copley.s...@gmail.com on 17 Mar 2014 at 10:34

Attachments:

question.png

tchepet / edcodeorg

Grade multiple-choice questions that have a range of answers (using tick-boxes), rather than just a single answer (option-buttons) #83