Glen has limited funds left in his grant to pay participants to be in his experiment. he wants to know how many participants he needs to detect a difference between conditions. what statistical technique would him estimate how many participants he needs?

The answer is Statistical Power Analysis. This is regularly directed before the information accumulation. The principle reason of using power analysis is to enable the specialist to decide the littlest example to measure that is appropriate to identify the impact of a given test at the coveted level of significance.