Efficiency of the Wilcoxon Signed-Ranks TestRefer to Table 13-2 in Section 13-1 and identify the efficiency of the Wilcoxon signed-ranks test. What does that value tell us about the test?

Solution 4BSC Step 1 From the table 13-2 (Efficiency: Comparison of Parametric and Nonparametric Tests table). We know that The efficiency of Wilcoxon signed rank test. Therefore The efficiency of Wilcoxon signed rank test = 0.95 (From the table) The efficiency of Wilcoxon signed rank test do not follow any distribution is the best as it not only takes the signs of the differences into consideration but the ranks as well, thus reflect the true nature of the data.