1.Easy
Which is an example of qualitative data?
- AInterview transcripts describing feelings about work
- BScores on a 20-item memory test
- CReaction times in milliseconds
- DNumber of words recalled
2.Easy
In a naturalistic observation, the researcher:
- AControls the environment in a laboratory
- BRandomly assigns participants to conditions
- CAsks participants to complete a questionnaire about their everyday behaviour
- DObserves behaviour in its usual setting without manipulating variables
3.Easy
The mode of a data set is:
- AThe middle value when scores are ordered
- BThe difference between highest and lowest values
- CThe most frequently occurring value
- DThe arithmetic average of all values
4.Medium
In a repeated measures design, order effects can be controlled by:
- AUsing a larger sample only
- BSingle-blind procedures
- CCounterbalancing
- DRandom sampling
5.Medium
A researcher wants to test whether there is an association between gender (male/female) and preferred film genre (four categories). Which test is appropriate?
- APaired t-test
- BPearson's correlation
- CChi-square test of independence
- DOne-way ANOVA
6.Medium
A Type I error occurs when a researcher:
- ARejects a null hypothesis that is actually true
- BUses the wrong statistical test
- CCollects too much data
- DFails to reject a null hypothesis that is false
7.Hard
In multiple regression predicting exam scores from study hours and sleep, R² = 0.36. What does this mean?
- A36% of students passed the exam
- BThe correlation between the predictors is 0.36
- CStudy hours cause 36% of exam success
- DThe predictors together explain 36% of the variance in exam scores
8.Hard
A study finds that the effect of stress on illness is weaker in people with strong social support. Social support is acting as a:
- AMediator
- BModerator
- CConfound
- DDependent variable
Answer key
- 1. A · Interview transcripts describing feelings about work
- 2. D · Observes behaviour in its usual setting without manipulating variables
- 3. C · The most frequently occurring value
- 4. C · Counterbalancing
- 5. C · Chi-square test of independence
- 6. A · Rejects a null hypothesis that is actually true
- 7. D · The predictors together explain 36% of the variance in exam scores
- 8. B · Moderator
Full step-by-step solutions: practise this topic on examproblems.com.