During Module 1, we learned about the difference between accuracy and precision. Accuracy is calculated using "assessment points", in which the true value and estimated value is known (Bolstad). Whereas, precision is the value pertaining to how accurate the estimated value is to the true value.
The horizontal precision between the reference point and the average waypoint measured at approximately 3.26 meters. I calculated the horizontal precision (68%) to be 4.4 meters. There is over a meter difference noted here. This discrepancy could be due to the use of a recreational GPS device versus the use of a professional unit.
We also measured the horizontal distance between a reference
point and the average waypoint location, and determined there was a 1.14-meter
discrepancy. The vertical accuracy,
which was calculated by subtracting the elevation of the average waypoint (28.54m)
from the reference point (22.8 meters), showed a difference of 5.74 meters.
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