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为了判定指数分布曲线是否适用于选取的样本系列,对不同选样样本系列的概率密度曲线和指数分布曲线之间的相似情况进行了理论分析,并结合实例采用指数分布曲线对不同选样方法下选取的样本系列概率密度直方图进行曲线拟合.结果表明:年最大值法选样从理论上不适宜选用指数分布曲线进行频率分析;年多个样法选取样本系列只有在概率密度曲线呈“捺”形时,才可以考虑采用指数分布曲线,否则不宜采用.
In order to determine whether the exponential distribution curve is suitable for the selected sample series, the similarities between the probability density curves and the exponential distribution curves of different sample series are theoretically analyzed, and the exponential distribution curves are used to analyze the influence of different sample selection methods The probability density histogram of the selected series of samples is used for curve fitting.The results show that the annual maximum value method sample is not suitable for the frequency analysis by using the exponential distribution curve theoretically.Selecting the sample series only when the probability density curve is “Na” shape, we can consider the use of exponential distribution curve, or should not be used.