There are numerous uses for population size estimation, and numerous ways to estimate.
In this lab, the mark and recapture method was used by randomly choosing and marking 10 specimens from a bag of an unknown number. The ten trials of 15 specimens were randomly taken from the bag. This yielded variegated results from the different teams.
Using the random sampling method, a four (4) foot by four (4) foot grid was made on the floor, and the specimens were randomly spread across this. The specimens from four of the four (4) foot squares were added together and multiplied by four (4) to garner the population estimation. This process was repeated a varied number of times, with varied accuracy, among the groups.
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My group, Josh and I, found the following results: for the first ten trials the estimated total was 83, after ten more it was 86. For the random sample method the estimate was 88. The actual total was 89. From this it was determined that the more runs included in a mark and recapture method the accurate it may become, the random sample test may have been more accurate, or we may have just been lucky.
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