Research methods- choosing statistical tests

Question 1

What are statistical tests also known as?

Answer 1

Inferential statistical tests

Question 2

What are statistical tests used for?

Answer 2

used to infer (make conclusions) about the target population from the sample.

Question 3

What 2 categories can statistical tests be divided into?

Answer 3

Parametric
Non-parametric

Question 4

What must the data be for a parametric test?

Answer 4

Data must be interval or ratio.

Question 5

What is the difference between a parametric and non-parametric test?

Answer 5

A non-parametric test is less precise than a parametric test.

Question 6

What must the data be for a non-parametric test?

Answer 6

Data is either nominal or ordinal.

Question 7

What are the 8 different types of statistical tests

Answer 7

Sign test
Chi square
Pearson’s r
Spearman’s rho
Related t-test
unrelated t-test
Wilcoxon T
Mann Whitney U

Question 8

What is the level of measurement for a sign test?

Answer 8

nominal data

Question 9

What is the design for a sign test?

Answer 9

Repeated measures or matched pairs

Question 10

What does the sign test look for?

Answer 10

A difference

Question 11

What is the level of measurement for chi square?

Answer 11

nominal data

Question 12

What is the design for chi square?

Answer 12

independent groups

Question 13

What does chi square look for?

Answer 13

An association or difference

Question 14

What is the level of measurement for Pearson’s r?

Answer 14

interval (or ratio) data

Question 15

What does Pearson’s r and spearman’s rho look for?

Answer 15

A correlation, looking for a relationship

Question 16

What is the level of measurement for Spearman’s rho?

Answer 16

ordinal data

Question 17

What is the level of measurement for a related t-test?

Answer 17

interval (or ratio) data

Question 18

What is the design for a related t-test?

Answer 18

Repeated measures or matched pairs

Question 19

What does a related t-test look for?

Answer 19

A difference

Question 20

What is the level of measurement for an unrelated t-test?

Answer 20

interval (or ratio) data

Question 21

What is the design for an unrelated t-test?

Answer 21

independent groups

Question 22

What does an unrelated t-test look for?

Answer 22

A difference

Question 23

What is the level of measurement for Wilcoxon T?

Answer 23

ordinal

Question 24

What is the design for Wilcoxon T?

Answer 24

Repeated measures or matched pairs

Question 25

What does a Wilcoxon T look for?

Answer 25

A difference

Question 26

What is the level of measurement for a Mann Whitney U?

Answer 26

ordinal

Question 27

What is the design for a Mann Whitney U?

Answer 27

independent groups

Question 28

What does a Mann Whitney U look for?

Answer 28

A difference

Question 29

What does a degrees of freedom allow?

Answer 29

The researcher to have room to manoeuvre, or have statistical flexibility in case of mistakes.

Question 30

For chi squared is the level of significance greater than or less than the critical value?

Answer 30

Greater than or equal to.

Question 31

For pearson’s r is the level of significance greater than or less than the critical value?

Answer 31

Greater than or equal to.

Question 32

For spearman’s rho is the level of significance greater than or less than the critical value?

Answer 32

Greater than or equal to.

Question 33

For a related t-test is the level of significance greater than or less than the critical value?

Answer 33

Greater than or equal to.

Question 34

For an unrelated t-test is the level of significance greater than or less than the critical value?

Answer 34

Greater than or equal to

Question 35

For wilcoxon T is the level of significance greater than or less than the critical value?

Answer 35

Less than or equal to.

Question 36

For Mann Whitney U is the level of significance greater than or less than the critical value?

Answer 36

Less than or equal to.