Two Tailed Mann Whitney U Test Table. Before we address this question we consider the range of the test statistic u in two different situations. Statistical table 8 2 5 one tailed at 005.
0 25 53 62 71 75 80 89 102 106 111 115 119 128 132 137 1141 150 154 159 163 167 172 176 181 51 56 61 66 71 76 86 91 96. It is used to test the null hypothesis that two samples come from the same population i e. Where u 1 u 2 n 1 n 2.
Where u 1 u 2 n 1 n 2.
Where r 1 sum of the ranks for group 1 and r 2 sum of the ranks for group 2. Although it is a non parametric test it does assume that the two distributions are similar in shape. Some programs define u and u based on which data set is entered first so may reverse the definitions of u and u for some analyses. Is this evidence in support of the null or research hypothesis.
