Description of the illustration stats_t_test.eps
{ STATS_T_TEST_ONE ( expr1 [, expr2 ] | { { STATS_T_TEST_PAIRED | STATS_T_TEST_INDEP | STATS_T_TEST_INDEPU } ( expr1, expr2 } } [, { { 'STATISTIC' | 'ONE_SIDED_SIG' } , expr3 | 'TWO_SIDED_SIG' | 'DF' } ] )