We have a requirement for a multiple choice question (more than one answer) that has 5 answers of which 3 are correct.
Conventionally you would give 33.333% for each correct answer and 0% for each incorrect.
However the scoring approach we wish to take is that the submitted answer is only correct - 100% when all 3 correct answers and 0 incorrect answers are chosen.
If there is any variance from this - less than 3 correct or any incorrect answer, then the score is 0 for that question.
Has anyone else out there met this requirement or have any bright ideas about how to go about this?
Many thanks in advance...
Ben