Research Methods: Stats Testing Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

This level of measurement is presented in the form of categories

A

Nominal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

This level of measurement can be ranked but does not have fixed intervals.

A

Ordinal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A researcher gave a questionnaire to her participants to rate their happiness in their marriage on a scale of 1(unhappy) to 4 (happy). What level of measurement is she using and why?

A

Ordinal
It is based on opinions of whether they thought they have a happy marriage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

A researcher asked people whether they were currently on a diet or not on a diet. What level of measurement is this?

A

Nominal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Why is time considered interval level data?

A

it is an objective/factual measure which has equal intervals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A research gave participants a standardised IQ test. What level of measurement is this?

A

Interval (as it is a standardised measure)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A researcher gave participants 20 words to learn. Group one listened to the words whereas the other group read the word. The total number correctly recalled was measured. What level of measurement is this?

A

Ordinal as there are not equal intervals between scores

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What examples of objective measures would be seen as interval level data?

A

Time, height, weight & standardised measures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which statistical test should be used?
The Bavarian Institute of Health Exploitation was concerned about the effect of lager drinking on the local population. They studied if there was a difference between drinkers and their IQ. The participants were grouped by IQ (high medium and low) and drinking (drinkers and non-drinker).

A

Chi-square
Difference - in IQ of drinkers and non-drinkers
Independent - either drinker or non drinker
Nominal - categories of high,medium or low IQ and drinker or non-drinker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which statistical test should be used?
Some people argue that exposure to cold weather causes the common cold. Researchers tested this supposed link by selecting a sample of school children and developed a scale for how often they played outside (1 represents never and 10 is always joins in). They also developed a scale for the number of colds with 1 representing very few and 5 is very frequently.

A

Spearman’s Rho
Correlation between playing outside and colds
Ordinal level data - based on opinions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Which stats test would be appropriate?
Test of difference, matched pairs & Nominal data

A

Sign Test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which stats test would be appropriate?
Test of difference, independent measures & ordinal level data

A

Mann Whitney

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which stats test would be appropriate?
Test of correlation, and interval level data

A

Pearson’s r

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which stats test would be appropriate?
Test of difference, independent measures and interval level data

A

Unrelated T-test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which stats test would be appropriate?
Test of correlation and ordinal level data

A

Spearman’s Rho

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which stats test would be appropriate?
Test of correlation and nominal data

A

Chi Square

17
Q

Which stats test would be appropriate?
Repeated measures, test of difference and interval data

A

Related-T-test

18
Q

Which stats test would be appropriate?
Test of difference, Matched pairs and Nominal data

A

Sign Test

19
Q

When should you use a Sign test?

A

Test of difference
Repeated or matched pairs
Nominal data

20
Q

When should you use a Wilcoxon test?

A

Test of difference
Repeated or matched pairs
Ordinal data

21
Q

When should you use a Related t-test?

A

Test of difference
Repeated or matched pairs
Interval data

22
Q

When should you use a chi square?

A

Test of difference, independent measures and nominal data

or

Test of correlation, nominal data

23
Q

When should you use a Mann Whitney U test?

A

Test of difference
Independent measures,
Ordinal data

24
Q

When should you use an Unrelated T-test?

A

Test of difference
Independent measures
Interval data

25
Q

When should you use a Spearman’s Rho?

A

Test of correlation
Ordinal level data

26
Q

When should you use a Pearson’s r?

A

Test of correlation
Ordinal level data