Abstract: The traditional goodness-of-fit approaches for five sensitivity response curves of pyrotechnics were improved, and the Box-しox normal distribution and its goodness-of-fit approach were entirely given. Under the Pearson x2、distance, it is shown that the goodness of fit using Box Cox normal dis tribution is more superior than that using traditional five distributions in most cases of the 15 examples.

Key words: mathematical statistics , sensitivity distribution of pyrotechnics , Box-Cox normal distribu?tion , Pearson X2 statistic , maximum likelihood estimate