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乘法模型中的点估计AI 解读

In a multiplicative model it is usual to assume that the logarithm of the disturbance variable is normally distributed with unknown variance a2 and with a mean which is either zero or - la2 according to the viewpoint taken of the object of the model. It is shown that, for each of several estimation criteria, the two assumptions lead to precisely the same point estimators of the exponents of the explanatory variables in the model and of the conditional mean, median, and mode…

关于对数正态模型估计的札记AI 解读

This note derives an analytical relationship connecting two functions which arise when using the minimum variance unbiased estimation procedure for lognormal models given by Finney [6] and extended by Bradu and Mundlak [2]. Numerical computation of these functions is also discussed.

对数正态模型估计的一则札记AI 解读

This note derives an analytical relationship connecting two functions which arise when using the minimum variance unbiased estimation procedure for lognormal models given by Finney [6] and extended by Bradu and Mundlak [2]. Numerical computation of these functions is also discussed.