Normally, _____________ is used to estimate the magnitude of the accidental errors.
- ALaws of physics
- BTheory of probabilityCorrect
- CBoth A and B
- DNone of the above
Solution
Concept
Theory of probability for accidental errors
Step-by-step solution
1. Accidental (random) errors cannot be predicted individually. 2. Their magnitude is estimated statistically using the theory of probability.
Explanation
Accidental errors follow the laws of chance, so their size and distribution are studied through probability theory (the normal distribution). Laws of physics do not describe them.
Shortcut
Systematic → laws of physics. Accidental → theory of probability.
Common mistake
Choosing both options.
Correct answer: B) Theory of probability