Question

Identify the error, which has all the following characteristics:
(i) Caused by observer’s misunderstanding and carelessness
(ii) Reading an angle counter-clockwise, but recording it as clockwise angle
(iii) Sighting the wrong target
(iv) Poor judgment by the observer

• A. Mistake
• B. Cumulative error
• C. Probable error
• D. Accidental error

Hint:

A mistake is a one-time error caused by human misunderstanding or carelessness, whereas errors like cumulative or probable errors occur due to systematic or random factors.

Answer 1

The Correct Option is A

The error described involves misunderstanding, carelessness, and misjudgment by the observer. These characteristics align with a mistake, which is a one-time error caused by human error, not a recurring or systematic issue like a cumulative or probable error.
Step 1: Understanding the Error Characteristics
Mistakes are typically due to a lack of attention or care, leading to a misinterpretation of readings or actions. The given options like cumulative errors and probable errors refer to different types of systematic or random errors, which are not caused by the observer's misunderstanding and carelessness.
Step 2: Conclusion
Therefore, the correct answer is (A) Mistake.