The presentation of the well known Likelihood Ratio, Wald and Score test statistics in textbooks appears to lack a unified graphical and geometrical interpretation. We present two simple graphical representations on a common scale for these three test statistics, and also the recently proposed Gradient test statistic. These unified graphical displays may favour better understanding of the geometrical meaning of the likelihood based statistics and provide useful insights into their connections.
|Numero di pagine||5|
|Rivista||THE AMERICAN STATISTICIAN|
|Stato di pubblicazione||Published - 2014|
All Science Journal Classification (ASJC) codes
- Statistics and Probability
- Statistics, Probability and Uncertainty
Lovison, G., Muggeo, V. M. R., Lovison, G., & Muggeo, V. M. R. (2014). The 'three plus one' likelihood-based test statistics: unified geometrical and graphical interpretations. THE AMERICAN STATISTICIAN, 68, 302-306.