Sampling Strategies

The species in Snyder-Middleswarth Natural Area were measured to estimate their abundance. The estimated time for haphazard sampling, random sampling, and systematic sampling are 13 hours 26 minutes, 11 hours 57 minutes, and 13 hours 19 minutes. Random sampling is the fastest.

 

Table 1     % Error in haphazard sampling, random sampling, and systematic sampling of the species in Snyder-Middleswarth Natural Area. The species include the Sweet Birch, Maple, White Pine, and Hemlock.

Species from Snyder-Middleswarth Natural Area % Error (Random Sampling) % Error (Systematic Sampling) % Error (Haphazard Sampling)
Sweet Birch            17.9%         26.3%              25.7%
Maple            22.5%         39.1%              63.2%
White Pine            12.6%         10.8%              19.5%
Hemlock

 

Average

           16.7%

 

17.4%

        29.3%

 

26.5%

             37.1%

 

36.4%

The percentage error of the White Pine in Snyder-Middleswarth Natural Area is the lowest. The percentage error of the Maple is the highest that are 22.5% error in random sampling, 39.15% error in systematic sampling, and 63.2% error in haphazard sampling.

The random sampling has the most accuracy with 17.4% error in average, and the haphazard sampling has the lowest accuracy with 36.4% error in average. The random sampling is the most recommended strategies with high accuracy. It would not likely to produce large errors in the experimental results.

 

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