There are several options available. Check them out and choose the best for your exam.
Scoring an exam question with multiple correct answers
When you select several answers as correct answers in a multiple-choice question, an extra setting for this will appear at the bottom of the page:
The options
All or nothing
Gives max points only when all correct answers are selected, and all incorrect answers are deselected.
points = max points
Otherwise, no points are given at all.
points = 0
No penalties
Gives points per correct answer selected, and does not deduct points for incorrect answers selected or correct answers deselected.
points = (max points /correct answer count) × correct answers selected
Strict
Gives points per correct answer selected, and deducts points per incorrect answer selected and per correct answer deselected.
points = (max points / correct answer count) × (correct answers selected - incorrect answers selected - correct answers deselected)
Comprehensive
Gives points per correct answer selected and per incorrect answer deselected, and deducts points per incorrect answer selected and per correct answer deselected.
points = (max points/answer count) × (correct answers selected + incorrect answers deselected - incorrect answers selected - correct answers deselected)
Guessing penalty
Gives points per correct answer selected, and deducts points per incorrect answer selected.
points = (max points /correct answer count) × (correct answers selected - incorrect answers selected)
The minimal number of points for each question is always zero. There is no negative point value for a question.
Examples
Example 1
A question has [correct A, correct B, correct C, wrong D]
Max points = 3
Answer count = 4
Correct answer count = 3
The participant selects [correct A, correct B, correct C]
The number of points for all five scoring options is the following:
All or nothing: points = 3
No penalties: points = (max points 3/correct answer count 3) × correct answers selected 3 = 3
Strict: points = (max points 3/correct answer count 3) × (correct answers selected 3 - incorrect answers selected 0 - correct answers deselected 0) = 3
Comprehensive: points = (max points 3/answer count 4) × (correct answers selected 3 + incorrect answers deselected 1 - incorrect answers selected 0 - correct answers deselected 0) = 3
Guessing penalty: points = (max points 3/ correct answer count 3) × (correct answers selected 3 - incorrect answers selected 0) = 3
Example 2
A question has [correct A, correct B, wrong C]
Max points = 1
Answer count = 3
Correct answer count = 2
The participant selects [correct A, wrong C]
The number of points for all five scoring options is the following:
All or nothing: points = 0
No penalties: points = (max points 1/correct answer count 2) × correct answers selected 1 = 0.5
Strict: points = (max points 1/correct answer count 2) × (correct answers selected 1 - incorrect answers selected 1 - correct answers deselected 1) = 0
Comprehensive: points = (max points 1/ answer count 3) × (correct answers selected 1 + incorrect answers deselected 0 - incorrect answers selected 1 - correct answers deselected 1) = 0
Guessing penalty: points = (max points 1/ correct answer count 2) × (correct answers selected 1 - incorrect answers selected 1) = 0
Example 3
A question has [correct A, correct B, wrong C, wrong D, wrong E]
Max points = 2
Answer count = 5
Correct answer count = 2
The participant selects [correct A, correct B, wrong E]
The number of points for all five scoring options is the following:
All or nothing: points = 0
No penalties: points = (max points 2/correct answer count 2) × correct answers selected 2 = 2
Strict: points = (max points 2/correct answer count 2) × (correct answers selected 2 - incorrect answers selected 1 - correct answers deselected 0) = 1
Comprehensive: points = (max points 2/ answer count 5) × (correct answers selected 2 + incorrect answers deselected 2 - incorrect answers selected 1 - correct answers deselected 0) = 1.2
Guessing penalty: points = (max points 2/correct answer count 2) × (correct answers selected 2 - incorrect answers selected 1) = 1
Example 4
A question has [correct A, correct B, correct C, wrong D]
Max points = 4
Answer count = 4
Correct answer count = 3
The participant selects [correct A, correct B]
The number of points for all five scoring options is the following:
All or nothing: points = 0
No penalties: points = (max points 4/correct answer count 3) × correct answers selected 2 = 2.67
Strict: points = (max points 4/correct answer count 3) × (correct answers selected 2 - incorrect answers selected 0 - correct answers deselected 1) = 1.33 Comprehensive: points = (max points 4/answer count 4) × (correct answers selected 2 + incorrect answers deselected 1 - incorrect answers selected 0 - correct answers deselected 1) = 2
Guessing penalty: points = (max points 4/correct answer count 3) × (correct answers selected 2 - incorrect answers selected 0) = 2.67