l Goodness-of-Fit Tests · Test statistic: O-E x 2 E where 0: actual number observed in each class E;= Expected number, T;.n o 2002 The Wadsworth GroupGoodness-of-Fit Tests • Test Statistic: where Oj = Actual number observed in each class Ej = Expected number, pj • n =  j E j E j (O – )2 c 2 © 2002 The Wadsworth Group