GIS5935 Lab 1: Accuracy & Precision

This lab dealt with measuring horizontal accuracy and precision. To measure horizontal precision, an "average" location has to be determined from the given data. After that, distances from the observations to that average must be measured, in order to find what distance corresponds to a specified percentage of the observations or given data. To measure horizontal accuracy, the "true" location must be determined or given, and then the distance to the average needs to be measured.

An example of precision estimates:

In this case, horizontal and vertical precision are at 4.4 and 5.7 meters, respectively, while the horizontal and vertical accuracy have 3.25 and 5.96 meter discrepancies, respectively.