• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

Coefficient Alpha

Two criteria are usually used to assess the quality of a test: reliability and validity. There are several different types of reliability, including test-retest, interrater, alternate form, and internal consistency. These tell us how much of the variance in the test ...

Loading
  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles