(where t is Student's t, A is a measure of non-randomness, D is the estimate of density, and N is the number of sample points) and is considered to be analogous to the usual bounded plot sampling error formula tS/vN for the specific case where density averages one per plct. Using Student's t for the 95 percent level of probability, 90 percent of the density estimates, drawn from 40 computer-sim...