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
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