Stochastic Simulation of Test Results with Guessing

probability of guessing correctly

1

2

1

3

1

4

1

5

number of trials or exam takers

3

items

60

Multiple-choice exam? I will guess!

Multiple-choice questions are objective and can easily and quickly be scored. But an item is often scored as solved simply because the test taker is a lucky guesser.

This Demonstration shows the accumulated scores for some test takers.