Analyzing consistency of a test paper using item analysis
Typically, item analysis is used to check the test structure or questionnaires for internal consistency and reliability of the results. Cronbach's alpha is generated for item analysis and is usually referred to as a measure of internal consistency or reliability of the survey.
In this example, we use item analysis to compare the results of students' answers on a test paper. We are interested in investigating the correlation of the question results with each other and the consistency of the results.
The data is in the form of a short exam. 20 students are asked five questions. The results are 1 for a correct answer and 0 for an incorrect one.
How to do it…
The following steps will check the ...
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