Andriessen International blog

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So, is a randomised test fair?

It depends.

A randomised test can be totally fair but it can also be biased.

A test is biased when the results have consequences that unfairly advantage or disadvantage test takers.

Is it possible to determine whether a test is fair? Whether it is equally difficult for all candidates?

Yes it is. But only in hindsight.

An analysis of the average p-value of the test is of great help in establishing the fairness of the test. When the average p-values ​​are spread across a broad range then it is highly likely that several tests had varying levels of difficulty.

Read more.

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