Overview for Item Analysis

Use Item Analysis to assess how well multiple items in a survey or test measure the same characteristic. Using this analysis, you can do the following:

  • Assess the strength and direction of the relationship between pairs of items.
  • Evaluate the overall internal consistency of the test or survey.
  • Determine whether omitting items improves the internal consistency.

For example, a customer relations manager for a chain of restaurants uses an item analysis to assess the questions in a customer satisfaction survey. The manager wants to ensure that the questions consistently measure customer satisfaction.

For more information about internal consistency, go to What is internal consistency?.

Where to find this analysis

To perform an item analysis, choose Stat > Multivariate > Item Analysis.

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