The Kuder and Richardson Formula 20 (KR-20), published in 1937, checks the internal consistency of items on a test. The internal consistency, or reliability, refers to the degree to which all 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