the distribution of a quotient of independent random variables, the numerator of which is a standardized normal variate, and the denominator of which is the positive square root of the quotient of X? distributed variate and its number of degrees of freedom. The number of degrees of freedom of X? is the number v of degrees of freedom of the t-distributed variate., statistical distribution in the context of the "Studentisation" (=the process of removing complications due to the existence of an unknown parent scale-parameter by constructing a statistic whose sampling distribution is independent of it)