Hello,
I believe I have exhausted my online resources (and eyes) in trying to
determine the appropriate method of analysis for the following
investigation.
I wish to determine if the efficiencies (% recovery) of two sampling units
are significantly different. I sampled in three different fields. I
attempted to collect 12 samples per unit per field (2 x 12 x 3 = 72);
however, some sample sites had no seeds and resulting data were excluded
(so
as to not confuse with 'true' zero data; i.e., 0 seeds of x recovered).
Working sample size = 24 and 27 (51), per unit.
My dataset sets up like this:
1) 51 observations
2) Response variable = percent seeds recovered; x = 0-1
3) Predictor variable 1 = unit (K or L); fixed categorical
4) Predictor variable 2 = field (1, 2, or 3); random categorical
More than 50% of my data are zeros, therefore, the distribution is far
from
normal.
Can someone provide guidance RE how best to proceed? Thank you kindly in
advance.
-Everett
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