Probabilistic MCQ

Express your uncertainty — assign probabilities, not just one answer.

How this test works

Instead of picking a single answer, you distribute 100% probability across all options — reflecting how confident you are in each one.

  • Use the sliders to assign % to each option
  • All options must sum to exactly 100%
  • Scoring: S = 25 × (0.8 − Brier score)
+20
perfect answer
0
pure ignorance
−30
confidently wrong

Spreading equally scores 0. More weight on the right answer = higher score. Weight on wrong answers costs you.

Demo
Demonstration question
Live scoring

Your results

+20 = perfect  ·  0 = ignorance  ·  −30 = confidently wrong

Scoring method
—
Total score
(max +100)
—
Avg per question
(max +20)
—
% of max possible
−300 (ignorance)+20