Question

Counting Snails: Ecological Sampling Technique 1st Recaptured Sample 2nd Recaptured Sample 108 112 Total Number Marked (M) 19

  1. This experiment started with 50 snails. What was the calculated estimate of population size (N) for each of the samplings? How close were the calculations?  Was the average of the two samplings close to the actual starting population size?
  2. Speculate why there was a difference between the estimated and actual values for the number of snails.
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