Abstract
Fuller (1991) concluded that pellet group counts do not index white-tailed deer (Odocoileus virginianus) numbers based on lack of correlation between 5 years of pellet counts and corresponding aerial surveys; however, this conclusion was drawn without knowing the true deer density. His conclusion is based on accepting a null hypothesis from an analysis with negligible power (1−β<0,25). From Monte Carlo simulations based on his data, I estimate that he had a Type II error (accepting H o when it is false) rate of 77% when a perfect linear relationship exists between pellet counts and aerial surveys, and a 20% chance of observing a correlation as low or lower than he observed
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