Chapter 17: Nonparamatric Tests - Wilcoxin Matched Pairs Signed Rank

Question 1

The wilcoxin matched-pairs signed ranks test is used when data is at least ____ scale.

Answer 1

ordinal

Question 2

This test is relatively_____. Such that ___ and ____ of scores are taken into consideration.

Answer 2

• powerful

- magnitude and direction

Question 3

The wilcoxin matched-pairs signed ranks test is used in place of the __ test for ____ when there is an extreme violation of at least one of the underlying assumptions of the __ test. ex?

Answer 3

• t-test
• correlated groups (paired t-test)
• • t-test
• ex: distribution is not normal or homogeneity of variance assumption is not met.

Question 4

The wilcoxin matched-pairs signed ranks test is more/less powerful than correlated groups t-test?

Answer 4

less

Question 5

How is this done in SPSS?

Answer 5

1. data is entered in as if a correlated t-test….
   (one group and a second group—-before and after)—-separate columns
   2.Analysis—>nonparametric–>legacy—> 2-related samples
   L>group 1 and 2 are dragged over to the pair box as one pair.
   L> check the wilcoxin box