Chapter 1: What This Book Is About
An Overview of Item Analysis and Test Reliability
Introduction
This book has dual purposes: One is to describe basic (and some advanced) ideas about how tests are evaluated. These ideas start from such simple tasks as scoring a test and producing frequencies on each of the multiple-choice items to such advanced tasks as measuring how well test items are performing (item analysis) and estimating test reliability. You will even find some programs to help you determine if someone cheated on your test. In addition to discussing test theory and SAS programs to analyze tests, we have included a chapter on how to write good test items.
Tests are used in schools to assess competence ...
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