Systems of Frequency Curves Generated by Transformations of Logistic Variables
本文通过对逻辑斯蒂分布应用三种简单变换，得到LL、LB和LU频率曲线系统，并讨论其性质及与S系统的关系。
The log normal, SL, logit normal, SB, and the sinh−1 normal, SU, systems of frequency curves are obtained by three simple transformations of the normal curve. By applying the same transformations to the logistic distribution, systems LL, LB and LU are obtained. Some properties of these systems, and their relation to the S systems, are discussed.