Non-Parametric: Wilcoxon Signed-Rank

Question 1

What are the hypotheses for one sample WSR?

Answer 1

H⁰:ŋ= median value
H¹:ŋ≠”
ŋ>”
ŋ<”

Question 2

What are hypotheses for paired WSR?

Answer 2

H⁰:ŋD=0
H¹:ŋD≠0
ŋD>0
ŋD<0

Question 3

How to find TS of one sample WSR?

Answer 3

• Calc. diff. between each value and the median
• Rank differences from closest
• Add pos. and neg. ranks separately
• TS is both totals - use smaller

Question 4

How to find TS of paired WSR?

Answer 4

• Calc. signed diff. between each pair
• Rank differences from closest
• Add pos. and neg. ranks separately
• TS is smaller one

Question 5

How to find CV of WSR?

Answer 5

Table 10 in equation booklet

Question 6

Assumptions of WSR?

Answer 6

• Data follows no known distribution
• Samples taken randomly
• Samples taken independently
• Data is symmetrical around median