shapiro 和 normaltest 在 python 中可以互换使用吗？

Question

I used to use scipy.stats.shapiro to test normality of data but seems like

 scipy.stats.normaltest 

does the same. Can they be used interchangeably without much difference?

Answer 1

In this answer Shapiro seems to be generally better than D'Agostino-Pearson test used in normaltest .

The ultimate reason why the Shapiro Wilk is popular has, I think, less to do with Pubmed or NIST but rather with its excellent power in a wide variety of situations of interest (which would in turn lead to wider implementation and hence, popularity); it generally comes out toward the top against a wide variety of non-normal distributions in power comparisons with other possible choices. I wouldn't claim it's the best possible omnibus test of normality, but it's a very solid choice.