power function noun
: a function of a parameter under statistical test whose value for a particular value of the parameter is the probability of rejecting the null hypothesis if that value of the parameter happens to be true
: a function (as f(x) = axk) that equals the product of a constant and a power of the independent variable
First Known Use of POWER FUNCTION
Seen & Heard
What made you want to look up power function? Please tell us where you read or heard it (including the quote, if possible).