Hi all,
   I am newbie in using R software and also doing statistical test. I want to know if my data in in normal distribution. I have 2 groups of data and I did calculate Shapiro Wilks using R software. Here is the results:

Group 1: W = 0.9206, p-value = 0.01683
Group 2: W = 0.9626, p-value = 0.4694

I am not quite sure what default confidence level (CF) is used in calculating Shapiro Wilks. Else, may I choose my own CF. Let say, if I choose CF = 0.01, therefore I may approve that Group 1 and Group 2 data are normal. If not, what should I do. My next plan is to apply T Test for both groups (assuming both are normal). I really need advice from experts here.

Cheers,
Halizah



      
	[[alternative HTML version deleted]]

