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The quantile-quantile (Q-Q) 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 quantile-quantile graphs are produced by plotting the observed data values xi (i = 1, ... , n) against the X-axis, and the following values against the Y-axis:
The Q-Q 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.
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