NSC411 Tma Solutions
1. The author chose the respondents of his cohabitation study by interviewing a few available cohabiting couples and by obtaining names of new couples from the previous respondents. This procedure is called
—>> Convenience sampling
Theoretical sampling
Snowball sampling
Simple random sampling
2. Which of the following is an advantage of observational methods of data collection?
—>> Directly captures a record of events and behaviours
Reactivity of subjects when observer is conspicuous
Data are free from distortions or biases
Faulty inferences can be based on attitudes and values of the observer
3. Which of the following statements is true about stratified random sampling?
Provides a means of obtaining a larger sample at lower cost
replicates proportions of subgroups in a population
involves the selection of certain subjects
—>> allows the researcher to use a smaller sample size
4. Pilot studies are done for all the following reasons EXCEPT:
Develop or refine a treatment
Examine instrument reliability
—>> Generalize findings to a population
Examine the feasibility of a study
5. A researcher chose a sample by using a sampling frame and taking the person that corresponded to the nth number in the list. This procedure is called:
Purposive sampling
—>> Systematic sampling
Stratified sampling
Quota sampling
6. The method of data collection that involves watching and noting of behaviours or activities of the research subjects that are of interest to the researcher is called
Focus group discussion
—>> Observation
Interview
Questionnaire
7. The following statements are true of questionnaire EXCEPT:
Questionnaire consist of a set of questions aimed at eliciting data and could be self-administered.
The questionnaire should be straightforward, in simple language and brief.
—>> Questionnaires foster the collection of indepth information.
Questionnaires may be open or closed type
8. The advantages/merits of questionnaire include the following EXCEPT:
They are easy to process and easy to distribute.
—>> Guarantees the collection of rich thick data.
Questionnaires have the advantage of complete anonymity of the subjects.
They are relatively cheaper to administer
9. In a study of attitudes to university policies, a researcher chose initially 150 first-year students, 130 second-year students and 100 third-year students (N1=380). Then, the researcher chose 25 male and 25 female students from each year group who were finally interviewed (N2=150). The sampling procedure used in this study was
Probability sampling
—>> Multi-stage sampling
Stratified sampling
Maximum variation sampling
10. Which of the following types of sampling is considered to be the weakest?
—>> Convenience sampling
Simple random sampling
Quota sampling
Cluster sampling
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