Tag Archives: standard errors
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A Correctly Weighted Least Squares Adjustment, Part 1
Problems from using computed standard deviations. According to the 2011 Minimum Standard Detail Requirements for ALTA/ACSM Land Title Surveys, “‘Relative Positional Precision’ means the length of the semi-major axis, expressed in feet or meters, of the error ellipse representing the uncertainty due to random errors in measurements in the location of the monument, or witness,...