SURVEYING LECTURE 3 and 4

defined as the number of times something will probably occur over the range of possible occurences.

PROBABILITY

refers to a quantity which, based on available data, has more chances of being correct than any other has.

MOST PROBABLE VALUE (MVP)

value that is closest to the true or exact value. known as corrected or standard value.

MVP

principle in applying correction (2)

1. SUBTRACT correction for excess measurements

2. ADD correction for deficient measurements

referred to as the deviation. defined as the difference between any measured value of a quantity and its most probable value

RESIDUAL

formula of residual

v=x-mpv

used to define how close a measured value is to a standard value of relative terms. it is the ratio of the error to the standard value of the measured quantity.

RELATIVE ACCURACY, RA

formula of RA

RA= error/mpv

used to define how close the value to the mean. it is the ratio of the error to the mean.

RELATIVE PRECISION, RP