[R] overdispersed zero inflated continuous data

[Jenushka]

I'm a beginning R user. 

The data: Volume of nectar in flowers under 4 different treatments, nested
for individual (measures were taken mutliple times from different flowers of
the same individual- never the same flower). 

Specs: 54% of the data = 0. Variance=3.89. Mean=1.03. Sample size per
treatment varies, all are >20. 

I am trying to determine if treatment had any impact on nectar volume. 

Thanks

J



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