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A surveyor made an error during the survey of a project which is associated with his skills and vigilance. Which type of error this surveyor has committed?

A surveyor made an error during the survey of a project which is associated with his skills and vigilance. Which type of error this surveyor has committed? Correct Answer Random errors

Systematic errors: A systematic error is an error that, under the same conditions, will always be of the same shape and size.

A systematic error always follows some definite mathematical or physical law and a correction can be determined and applied.

Such errors are of constant character and are regarded as positive or negative according as they make the result too great or too small.

E.g. Error due to imperfect handling of instruments, etc.

Blunders: A blunder (or gross error) is a significant, unpredictable mistake caused by human error that often leads to large discrepancies.

Blunders are typically the result of carelessness, miscommunication, fatigue, or poor judgment. Examples of common blunders are:

i) Improperly levelling of the surveying instrument.

ii) Setting up the instrument or target over the wrong control point.

Random (or accidental) errors: These are not directly related to the conditions or circumstances of the observation.

 For a single measurement or a series of measurements, it is the error remaining after all possible systematic errors and blunders have been eliminated.

Random errors are associated with the skills and vigilance of the surveyor. Random error is introduced into each measurement mainly because no human can perform perfectly. Random errors should be small and there is no procedure that will compensate for or reduce any one single error. Random errors, possibly due to sloppy work.

Random errors are unpredictable and are often caused by factors beyond the control of the surveyor. Their occurrence, magnitude, and direction (positive or negative) cannot be predicted.

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