All observations and all measurements contain error. The focus of much work in measurement is on minimizing and estimating the amount of error in any given measurement. In classical test theory, X is an observed score that is composed of ...

  • 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