I have been trying to preform both a bartlett's test and an arcsine
transformation on some average percentage data. I've tried inputting it
different ways and I keep getting the same error message:

> head(workingdata)
   DYAD   BEFORE     AFTER
1 BG-FL 4.606772  5.787520
2 BG-LL 5.467503  7.847395
3 AD-MV 5.333735 11.107380
4 MM-FL 5.578708 12.063500
5 MM-MV 2.037605  6.415303
6 MM-RM 6.158885 11.911080
> bartlett.test(BEFORE ~ AFTER)
Error in bartlett.test.default(c(4.606772, 5.467503, 5.333735, 5.578708,  :
  there must be at least 2 observations in each group
> asin(BEFORE)
[1] NaN NaN NaN NaN NaN NaN NaN
Warning message:
In asin(BEFORE) : NaNs produced

I'm at a loss here and I would greatly appreciate any guidance that could be
given me. Thank you!

-- 
Claire Sheller
Department of Anthropology
Tulane University
New Orleans, LA 70118
615-210-9129

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