note

一語の宇宙 | logarithm | 対数

ロガリズムとは「対数」のこと。 「log」という記号を高校で学んだ人も多いと思う。 「logarithm」の語源は、 ギリシア語の、「言葉」という意味の「logos」(ロゴス)と、 「数字」を意味する「arithmos」。 「logos」には、「言葉」という意味の他に「割合 ...
Nature

Back-transformation of treatment differences—an approximate method

Transformation of outcomes is frequently used in the analysis of studies in clinical nutrition. However, back-transformation of estimated treatment means and differences is complicated by the ...
Simon Fraser University

Other Transformations

The Box-Cox transformation is a general class of transformations that includes the logarithm as a special case. The %BOXCOXAR macro can be used to find an optimal Box-Cox transformation for a time ...