Summary:

The paper shows how to conduct a comprehensive study of the accuracy of the measurements made with an electronic total station TRIMBLE 5602 DR 200 +.
The results of the measurements of lenghts, horizontal angles and elevations were examined.
Measurements were performed on a test network of the Agricultural University in Krakow and the results of mathematical statistics methods have been developed to detect the presence of any irregularities in them.
Statistical surveys of these three groups of measurements were performed in order to check if their distributions of errors correspond to the normal distribution. This determines the accuracy of test measurements and the usefulness of the tested total station for the performance surveying.
To study the accuracy of length measurements a statistical ABBE test of compliance were used.
Measurements of angular and elevations were tested using the test of identity:
- for measuring of horizontal angles MANN-WHTNEY-WILCOXON test was used
- for measurements of elevations - SERIES test
To verify the results of these three statistical tests - all measuring groups were studied with tests parameters.
1/ S-factor asymmetry (skewness)
2/ e - flattening factor (excess, newfangled).
From the measurements and statistical studies drew the conclusions on the correctness of the results of the measurements made with tested equipment, and usefulness of this total station to perform various types of surveying.