By Jenna W

The purpose of this experiment was to investigate weather the Lincoln-Peterson Mark-Racapture Methods were accurate ways to find out a population. To perform this experiment, 100 clear marbles were placed in a large bowl, and 100 multi-colored marbles were placed in a second large bowl. One large handful or clear marbles was scooped up, and each number of marbles that were taken out were replaced by the same number or mulit-colored marbles. Do the same thing again, and count how many multi-colored marbles were in the second handful. Repeat the experiment 20 times.

After completing this experiment, it was found that the average number of Marbles in sample #1 (all clear) was 10.47, the average for marbles in sample #2 (all clear) was 8.94 and the average for sample #2 (all colored) was 2.15. After completing
the experiment, the population estimate was 53, which is far from 100 (which is the real population, so the experiment was repeated for 4 more trials, using a larger handful, and the population estimate was then 97.7 and therefore, the population methods
are accurate.

 

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