Multiple-choice test score (negative marking)
Your score on a multiple-choice test with penalties for wrong answers, and whether guessing pays off.
How it works
Points = right − wrong × penalty. Score = points / number of questions × scale. Guessing earns on average 1/choices − (1 − 1/choices) × penalty per question.
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- Right answers28
- Wrong answers7
- Left blank5
- Penalty per wrong answer (points)0.25
- Choices per question4
- Score out of20
you get:
- Score13.13 / 20
- Points26.25 / 40
- Without penalties you'd have14 / 20
- Points lost to penalties1.75
Frequently asked questions
How does the “Multiple-choice test score” tool work?
Points = right − wrong × penalty. Score = points / number of questions × scale. Guessing earns on average 1/choices − (1 − 1/choices) × penalty per question.
What do I need to enter?
Just fill in: right answers, wrong answers, left blank, penalty per wrong answer, choices per question, score out of. The result updates as you type.
Can you give an example?
Right answers: 28; Wrong answers: 7; Left blank: 5; Penalty per wrong answer (points): 0.25; Choices per question: 4 → Score: 13.13 / 20; Points: 26.25 / 40.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.