In 1947, Mann and Whitney developed a different version of test in order to apply for both equal and unequal sample sizes and provided tables for small sample sizes (Conover, 1999). Researchers like Gibbons and
In 1947, Mann and Whitney developed a different version of test in order to apply for both equal andunequal sample sizes and provided tables for small sample sizes (Conover, 1999). Researchers like Gibbons and