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THE FEUTEX TOOLKIT

Negative Marking Exam Score

Compute score and break-even confidence under a supplied incorrect-answer penalty.

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01 Your input
02 Your result
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FormulaScore = correct*reward-incorrect*penalty; Maximum = (correct+incorrect+blank)*reward; Break even confidence = 100*penalty/(reward+penalty)

Worked example

Inputs

Correct
32 answers
Incorrect
8 answers
Blank
10 answers
Reward
4 points
Penalty
1 points

Expected results

Score
120 points
Maximum
200 points
Break even confidence
20 %

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the measured quantities and your own planning assumptions.
  2. Review all calculated outputs and the stated limitations.

Try this example

{
  "correct": 32,
  "incorrect": 8,
  "blank": 10,
  "reward": 4,
  "penalty": 1
}

Accuracy and scope

Assumes blank answers score zero, fixed reward/penalty and a simple expected-score model. Actual exam rules may differ.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.