The application of skewness and kurtosis to the studies on particle distribution

Two statistical parameters, skewness and kurtosis are introduced to investigate particle distribution. A quantitative method is formulated to testify the fitting goodness to Γ-spectra. A quantitative criterion named 'Deviation Cofficient' is presented to express the natural deviation from exponential spectra under the Γ-spectra assumption and according to the criterion a classification is developped.

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