Test Preparation on RRB JE-Mechanical Engineering Solved Paper-11

Who made the following classic statement. "When you can measure what you are speaking about and express it in numbers, you know something about it, and when you can't express it in numbers, your knowledge is of a meager and unsatisfactory kind. It may be the beginning of knowledge, but you have scarcely in your thought advanced to the stage of science."

The ease with which observations can be made accurately is referred to as

The accuracy of measuring equipment is

Which of the following error's are generally distributed in accordance "with the Gaussian distribution