[R] tapply

From: livia <yn19832_at_msn.com>
Date: Fri, 01 Jun 2007 04:00:50 -0700 (PDT)

Hello, I want to conduct normality test to a series of data and get the p-value for each subset. I am using the following codes, but it does not work.

tapply(re, list(reg, ast), pvalue(shapiro.test))

Could anyone give me some advice? Many thanks.

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