Week 10- Non-parametric and chi-squared tests

Question 1

two situations that non-parametric tests are used..

Answer 1

When data, collected on a continuous scale (interval/ratio) aren’t ‘normally distributed

-when data is measured on ordinal (rank etc) and nominal scales (non-ranked)

Question 2

Nominal data is when People are grouped into mutually exclusive categories
that which are not in an order (e.g. gender, religion, )
TRUE OR FALSE

Answer 2

TRUE

Question 3

Ordinal means that the mutual exclusive groups can be ranked..
(obese)

Answer 3

TRUE

Question 4

Ordinal data doesn’t indicate how much one score is better than the others. Distances may be different from 1st to second than 3rd to 4th. TRUE OR FALSE

Answer 4

TRUE

Question 5

NON-PARAMETRIC equivalent test to.. Pearsons's correlation.
A)Spearman’s rank order correlation
B)Mann-Whitney U test
C) Wilcoxon signed-rank test
D)Friedman’s ANOVA

Answer 5

A)Spearman’s rank order correlation

Question 6

NON-PARAMETRIC equivalent test to..Independent t-test 
A)Spearman’s rank order correlation
B)Mann-Whitney U test
C) Wilcoxon signed-rank test
D)Friedman’s ANOVA

Answer 6

B)Mann-Whitney U test

Question 7

NON-PARAMETRIC equivalent test to.. Paired t-test .
A)Spearman’s rank order correlation
B)Mann-Whitney U test
C) Wilcoxon signed-rank test
D)Friedman’s ANOVA

Answer 7

C) Wilcoxon signed-rank test

Question 8

NON-PARAMETRIC equivalent test to.. One-way Anova 
A)Kruskal-Wallis ANOVA
B)Mann-Whitney U test
C) Wilcoxon signed-rank test
D)Friedman’s ANOVA

Answer 8

A) Kruskal-Wallis ANOVA

Question 9

NON-PARAMETRIC equivalent test to RM ANOVA 
A)Kruskal-Wallis ANOVA
B)Mann-Whitney U test
C) Wilcoxon signed-rank test
D)Friedman’s ANOVA

Answer 9

D)Friedman’s ANOVA

Question 10

Chi squared tests are used to compare differences in.... of people in one nominal/ordinal group compared to another (S)
A) number 
B) percentage 
C)average 
D) levels

Answer 10

B) percentage

Question 11

Chi squared test can’t be used on a repeated measure design.. TRUE OR FALSE

Answer 11

TRUE

each person must only contribute to one cell

Question 12

Chi squared test expected frequency should be greater than ...... otherwise it may lose statistical power (may fault detect difference) 
A) 2
B) 10
C) 5
D)3

Answer 12

C) 5

Question 13

In chi squared equation the sum of (O-E) values will always be..
A)100
B) 10
C)0 
D) same number as the total participants

Answer 13

C)0

Question 14

Degrees of Freedom in chi squared is..
A)N-1
B)N-g
C)g-1
D)K-1

Answer 14

D)K-1

K=number of categories