Introduction -- Density : mean and variance -- Normal and sampling distributions for fieldwork -- Confidence limits and intervals for density -- How many field samples? -- Spatial distribution : the ...
Learn the steps and see examples of simple random sampling, which ensures each member of a population has an equal chance of selection for unbiased research results.
Sorensen, L. L., Coddington, Jonathan A., Griswold, C. E., Hormiga, G., and Place Bjorn, P. de. 2002. "Inventorying and Estimating Sub-Canopy Spider Diversity using ...