14.3: Critical values for the Mann-Whitney-Text
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There are three tables, one for \(p\) < 0.05, one for \(p\) < 0.01 and one for \(p\) < 0.001 (all for two-tailed tests).
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Starting with the first table, perform the following steps.
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Find the smaller one of your sample sizes in the rows labelled m and the larger of your sample sizes in the columns labelled n.
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Find the cell at the intersection of the row and the column.
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If your
U
value is smaller than or equal to the value in this cell, your result is significant at the level given above the table.
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Repeat the three steps with the second table. If your
U
value is larger than the value in the appropriate cell, stop and report a significance level of 0.05. If it is smaller or equal to the value in the appropriate cell, go to 3.
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Repeat the three steps with the third table. If your
U
value is larger than the value in the appropriate cell, report a significance level of 0.01. If it is smaller or equal to the value in the appropriate cell, report a significance level of 0.001.
Critical Values for the Two-Sided Mann-Whitney Test (\(p\) < 0.05)
Critical Values for the Two-Sided Mann-Whitney Test (\(p\) < 0.01
Critical Values for the Two-Sided Mann-Whitney Test (\(p\) < 0.001)