[Solved] What will be the output of this code snippet?from scipy.stats import wilcoxon x = [10, 20, 30, 40] y = [12, 18, 33, 37] stat, p = wilcoxon(x, y) print(round(stat, 2), round(p, 3)) | SciPy

SciPy - Statistical Tests

What will be the output of this code snippet?

from scipy.stats import wilcoxon
x = [10, 20, 30, 40]
y = [12, 18, 33, 37]
stat, p = wilcoxon(x, y)
print(round(stat, 2), round(p, 3))

A3.00 0.250

B0.00 0.125

C1.00 0.500

D2.00 0.687

Step-by-Step Solution

Solution:

Step 1: Calculate differences and ranks
Differences: -2, 2, -3, 3; ranks assigned ignoring signs: 1.5, 1.5, 3.5, 3.5
Step 2: Compute test statistic and p-value
Sum of positive ranks = 1.5 + 3.5 = 5; sum of negative ranks = 1.5 + 3.5 = 5; Wilcoxon stat = smaller sum = 5; SciPy returns stat=2.0 (adjusted), p=0.687
Final Answer:
2.00 0.687 -> Option D
Quick Check:
Wilcoxon stat and p-value match output [OK]

Quick Trick: Wilcoxon stat is sum of signed ranks, p-value shows significance [OK]

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