Choosing A Statistical Test

Question 1

Name the statistical test?

Answer 1

Mann whittney
Spearman’s Rho
Chi squared
Pearsons R
Wilcoxon
Sign test
Unrelated and related T test

Question 2

What are the 3 factors which influence the choice of a statical test?

Answer 2

Is it a test of difference or correlation
Experimental design
Level of measurement

Question 3

What is related design linked with repeated measures?

Answer 3

Repeated measures and matched pairs are related design
As participants in both are related because either the same person or they have matched and share characteristics

Question 4

What is unrelated design linked with independent group designs?

Answer 4

The participants in each group are different and therefore are unrelated

Question 5

What is nominal data?

Answer 5

Discrete data in categories - one item in each category

Question 6

What is ordinal data?

Answer 6

Data is ordered in some way - Includes a scale and ranking system (1-7)

Question 7

What is interval data ?

Answer 7

Numerical data / scales made of equally - sized units (e.g minutes)

Question 8

Why might ordinal data be regarded as unsafe?

Answer 8

Based on subjective categories and is not based on an equally spaced scale

Question 9

Why might interval data be a more objective measure?

Answer 9

Based on established units of measurements that can be understood by everyone

Question 10

Give some reasons to why spearman’s rho test was used ?

Answer 10

To find a correlation between two sets of data
Used ordinal data

Question 11

Give a few reasons why a T test is used ?

Answer 11

To find the difference between sets of data
The data is interval
Repeated measure designs are used

Question 12

Give a few reasons why a Chi squared test was used ?

Answer 12

Define the difference between two sets of data
The data involve is nominal data
And is a unrelated design so uses independent group