Distance Measurements Analysis

Ten teams of students measured the perimeter of a seven-sided traverse using pacing and taping. Each leg was measured twice. The standard deviations of the measurements of the perimeter showed that pacing gave much more variable results. Pacing also had a much wider certainty range at different probabilities.
                                           Pacing       Taping

Average 1056.1 1065.0
Standard Deviation 49.3 7.5
Maximum 1172 1071.61
Minimum 995 1051.1
Difference 177 20.51

As can be seen in the table above the range of measurements is much greater. This is somewhat expected as it is the combined results of ten different groups. Also, greater practice would result in less variability in the measurements.

STDEV-Graph.jpgThe chart shows the standard deviations for the measurements of each leg and illustrates the difference in the results.
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