How are points calculated for choice questions?
Choice questions can have different maximum numbers of points that can be gained or lost. The number is shown in the question.
Single choice questions
If you choose the correct option you will receive the maximum number of points. If you choose one of the wrong options, you will lose a number of points calculated as maximum_points / (number of options - 1).
For example, if you are to select one correct option out of five in a 100-points question, you will gain 100 points for selecting the correct option and lose 100 / (5 - 1) = 25 points for selecting any of the wrong options.
Multiple choice questions
Imagine you were to select one to three options in a 75-point multiple choice question.
When the results are announced you realise that you selected three options, of which two were correct and one was incorrect, and you didn't select one of the correct options.
To calculate your points we use the following formula:
For each correctly selected option you get max_points / # of correct options points. In this example you will gain 2 * (100 / 3) = 66 points.
For each incorrectly selected option you lose (max_points / (# of options -# of correct options)). In our example you will lose 100 / (6 - 3) = 33 points.
Points for correctly and incorrectly selected options are then summed up. In total, you will receive 66 - 33 = 33 points which will round up to 38 points.