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

Root Mean Square

Root mean square error (RMSE) is a measure of how well an estimator performs. If ^β is an estimator of β, the RMSE of ^β is given by

We can immediately note that ifβ =E[^β], then this is identical to the variance of ^β. Rewriting this and simplifying the ...

    • 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