How do you know if the items of a test are hard or easy; fair or biased; accurate at measuring ability or not? 
Item Response Theory (IRT).
In this training, you will see, with real life examples, how IRT answers these questions to assess a test.
How do you know if the items of a test are hard or easy; fair or biased; accurate at measuring ability or not?
Item Response Theory (IRT).
In this training, you will see, with real life examples, how IRT answers these questions to assess a test.