在等距数组求众数的上、下限公式的基础上，讨论了引用频数密度求异距数列众数的方法及优点，用具体的例子说明二者的差异，指出了频数密度引入的合理性。% Based on the upper and lower bound formula in determining the mode of the series of unequal group interval, the frequency density is introduced and the advantage of which is also discussed in this paper. The difference of the two methods is illustrated by a specific example. Finally, the rationality of the Introduction of frequency density is expounded.
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