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QQ PlotThe quantilequantile (QQ) plot is a graph of the input (observed) data values plotted against the theoretical (fitted) distribution quantiles. Both axes of this graph are in units of the input data set. The quantilequantile graphs are produced by plotting the observed data values x_{i} (i = 1, ... , n) against the Xaxis, and the following values against the Yaxis: where:
The QQ plot will be approximately linear if the specified theoretical distribution is the correct model. EasyFit displays the reference diagonal line along which the graph points should fall. See also: 

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