Question

Which type of approach is followed by random errors?

(a) Poisson distribution approach

(b) Binomial distribution approach

(c) Gaussian distribution approach

(d) Polynomial distribution approach

This question was posed to me in a job interview.

The origin of the question is Evaluating Uncertainty in Measurement in portion Evaluating Uncertainty in Measurement of Engineering Metrology

Answer 1

Right answer is (c) Gaussian distribution approach

The explanation is: Random errors are those which can be caused by little variation in the standard setting of position, operator errors in reading the display of instrument etc. Random error follows the normal frequency or Gaussian distribution approach.