2D Detrended Probability Plots

This type of graph is used to evaluate the normality of the distribution of a variable, that is, whether and to what extent the distribution of the variable follows the normal distribution. The selected variable will be plotted in a scatterplot against the values "expected from the normal distribution." This plot is constructed in the same way as the standard normal probability plot, except that before the plot is generated, the linear trend is removed. This often "spreads out" the plot, thereby allowing the user to detect patterns of deviations more easily.

See also, Normal Probability Plots, Graphs - Normal Probability Plots, Graphs -Quantile-Quantile Plots, and Graphs - Probability-Probability Plots