The symbol for the probability of a Type II error is <math>\beta</math> (beta). The power of a statistical test is defined as <math>1 - \beta</math>.
See also Type I error.
... 64, and 11.8% who are 65 years of age or older. The median age is 36 years. For every 100 females there are 96.3 males. For every 100 females age 18 and over, there are ...