Description of the illustration stats_f_test.eps

STATS_F_TEST(expr1, expr2
             [, { { 'STATISTIC'
                  | 'DF_NUM'
                  | 'DF_DEN'
                  | 'ONE_SIDED_SIG'
                  } , expr3
                | 'TWO_SIDED_SIG'
                }
             ]
            )