Lesson 11 - Inferential Analysis - Spearmans Rho, Mann Whitney , Chi Squared And Wilcoxon - Non Parametric

Question 1

Questions how to choose the right statistical test

Answer 1

1) is it a test of difference , correlation or association
2) what design has it used , independent measures or repeated measures
3) what level of measurement have I used ? Nominal , ordinal , interval
4) is the test non parametric or parametric

Question 2

Spearman’s Rho

Answer 2

• relationship or correlation
• ordinal
• related pairs
• non parametric

Question 3

Man Whitney

Answer 3

Test of difference
Independent group design
Ordinal or interval
Non parametric

Question 4

Chi squared

Answer 4

Test of association or test of difference
Independent measures
Nominal data
Non parametric

Question 5

Observed value

Answer 5

Numerical value calculated

Question 6

Degrees of freedom

Answer 6

(Number of rows -1)(number of columns -1)

Question 7

What does Na stand for - for Mann Whitney

Answer 7

Number of participants in a smaller sample

Question 8

What does Nb stand for - in Mann Whitney

Answer 8

Number of participants in a larger sample

Question 9

What does T stand for - for mann Whitney

Answer 9

Sum of ranks in smaller sample

Question 10

Wilcoxon

Answer 10

Test of difference
Repeated measures or matched pairs design
Ordinal data
Non parametric