Practice Quiz

Surveying FS

Category - Plane Survey Calc

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Relative Positional Accuracy is best determined by least squares adjustment of a survey using GPS data for which of the following reasons?
  1. Errors are distributed following laws of random probability.
  2. It is the only adjustment method able to handle complex networks.
  3. The sum of squared residuals is minimized.
  4. All of the above
Explanation
Answer: D - Relative Positional Accuracy is best determined by least squares adjustment of a survey using GPS data for all of the stated reasons. The best results that can be obtained by any another adjustment method are equal to the results of a least squares adjustment. However, the validity of the results of a least square adjustment assumes that the instruments used were properly calibrated, field procedures undertaken were appropriate, blunders and systematic errors were removed or minimized, and the remaining inaccuracies were due to random errors.
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