The studentized range computed from a list x1, .., xn of numbers is given by the formulas .
q _{n,\nu}= \frac{\max\{\,x_1,\ \dots, \ x_n\,\} - \min\{\,x_1,\ \dots,\ x_n\}}{s} = \max_{i,j=1, \dots, n} \left\{\frac{x_i - x_j}{s}\right\} .