Half-normal plot, Advanced Statistics

Half-normal plot is a plot for diagnosing the model inadequacy or revealing the presence of outliers, in which the absolute values of, for instance, the residuals from the multiple regressions are plotted against the quintiles of the standard normal distribution. Outliers will become visible at the top right of the plot as points which are separated from the others, while the systematic departures from a straight line could indicate that the model is not satisfying. 

Posted Date: 7/28/2012 6:56:02 AM | Location : United States

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