2. The length of line AB was measured repeatedly on three different occasions and probable error of each mean value was computed with the following results: 1st measurements = 2111.450± 0.04 ml 2nd measurements= 2111.500± 0.05 m 3rd measurements = 2111.620± 0.02 m Solve the weighted mean of the three measurements conducted.

2. The length of line AB was measured repeatedly on three different occasions and probable error of each mean value was computed with the following results: 1st measurements = 2111.450± 0.04 ml 2nd measurements= 2111.500± 0.05 m 3rd measurements = 2111.620± 0.02 m Solve the weighted mean of the three measurements conducted.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Errors in surveying

An error in surveying is defined as the difference between two or more values of an identical quantity. However, the estimates are never accurate and there will always be a degree of variability regardless of the research tool or method used. These differences are known as errors that need to be reduced or eliminated to maintain certain levels of accuracy. Even if you carefully follow the prescribed test procedures, the considerations may contain errors.

Question

2. The length of line AB was measured repeatedly on three different occasions and
probable error of each mean value was computed with the following results:
1st measurements = 2111.450± 0.04 ml
2nd measurements= 2111.500± 0.05 m
3rd measurements = 2111.620± 0.02 m
Solve the weighted mean of the three measurements conducted.

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