Dear R list, I have a sequence of weekly observations of number of adults and larvae in various size classes from a butterfly population living in a subtropical area with pronounced wet and dry seasons. Wet and dry seasons are each defined 26 weeks long with fixed start and end dates. The data span 103 weeks (two seasons each of wet and dry) with some missing weeks. What I would like to do is compare means of each type of observation between wet and dry seasons ("Does the number of adults observed vary by season?"). Not surprisingly there is pronounced autocorrelation in the data, e.g.:
dwtest(lm(numadults ~ week)) gives DW = 0.2727, p-value = < 2.2e-16 Note that the effects of this autocorrelation extend across wet-dry and dry-wet boundaries. What would be a way to ask my questions in R? I'm still learning R (and statistics) so detailed answers would be most appreciated. Sincerely, Douglas Scofield Department of Biology [EMAIL PROTECTED] University of Miami off: (305) 284-3778 P.O. Box 249118 fax: (305) 284-3039 Coral Gables, FL 33124-0421 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help