[R-sig-eco] Transformation of the data.

Yong Zhang 2010202035 at njau.edu.cn
Wed Jan 12 13:49:43 CET 2011


Dear all,
As you know, before the ANOVA or t-test, we should test the normality of our data. Sometimes the transformation of our data is necessary, now I have a question, my data contains both positive and negative( such as 1, 2, -8, -5........). So, which kind of transformation should I take? 


2011-01-12 


Yong Zhang, Ph.D. 
Lab of aquatic insects & stream ecology
Dept.of Entonology, Nanjing Agricultural University
Nanjing, 210095,China 
Phone number:  (+86) -25-84395241
E-mail:2010202035 at njau.edu.cn


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