I am doing some statistical analysis of variance on a dataset (catch data from
fisheries) with many zero's (50%) and with non zero values that are
log-normally distributed. From literature I read that the delta distribution
(Pennington, 1983) is a good way to describe these kind of distributions and
to calculate an good estimate of the mean and variance. I want to do a
analysis of variance using this distribution. Has anybody ever tried to
program this in SAS. Or does anybody have an idea how I can simultaneously
analyse the zero-non zero catches (catch probability as presence absence data)
and the non-zero catches (lognormally distributed) in an analysis of variance.
Can anyone of you help me with this?? Thanks very much in advance.
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