16.36 Loss of product value.

In Example 16.6 (page 16-16), we considered the alternative hypothesis of vitamin C being systematically higher at the factory versus five months later when measured in Haiti. For the data provided in the example, the Wilcoxon signed rank statistic was found to be 34. On page 16-16, we noted that we could have equally used the sum of the ranks of the negative differences, which is 11.