Error exponents in hypothesis testing
In statistical hypothesis testing, the error exponent of a hypothesis testing procedure is the rate at which the probabilities of Type I and Type II decay exponentially with the size of the sample used in the test. For example, if the probability of error P e r r o r {\displaystyle P_{\mathrm {error} }} of a test decays as e − n β {\displaystyle e^{-n\beta }} , where n {\displaystyle n} is the sample size, the error exponent is β {\displaystyle \beta } .
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