[R] How to perform a grouped shapiro wilk test on dataframe
ramine.mossadegh at finra.org
Fri Apr 5 16:50:07 CEST 2013
I was wandering if it is possible to perform on a dataframe called 'all' a
shapiro wilk normality test for COUNTS by variable Group
ACTIVITY? Could it be done using plyer? I saw an eg that applies to an
array but not to a dataframe:
Any thoughts would be much appreciated.
My dataframe is in shape:
dat ACTIVIT COUNTS
1/1/13 XXXX 43
1/31/13 XXXX 60
1/1/13 YYYY 40
1/31/13 YYYY 10
etc going for 3 months.
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