Three group of researchers would like to seek your help to determine the methods of data collection and methods of sampling for the following statistical analysis. Propose the suitable method of data collection and method of sampling for each of the following with sufficient justification why you recommend your selection, over other possible methods. a. Analyse the voting intention of Australian voters for upcoming election. b. Investigation of reasons for not Big 4 banks (NAB, ANZ, CBA and WBC) passing on the full interest cuts introduced by reserve bank of Australia to its borrowers. c. Understand the demographic profile of the community living in Hume city council, Melbourne Examine opinions from adults on legalising marijuana use in Australia. Estimation of the average age of children in city of Melbourne. d. е.
The method of data collection and sampling depends on a number of factors mainly influenced by the nature of the study.
(a)
Analyze the voting intention of Australian voters for upcoming election.
Data collection: Questionnaires can be used to collect the data as the sample size here is large.
Sampling: In this case, random sampling can be used as it is not feasible to question every single person about their choice.
(b)
Investigation of reasons for not Big 4 Banks passing on the full interest cuts introduced by Reserve bank of Australia to its borrowers.
Data collection: Interviews can be used to collect the data as the sample size here is small and an expert who has the knowledge is needed for the interview.
Sampling: In this case, convenience sampling can be used as we need expert knowledge and views in this case.
(c)
Understand the demographic profile of community living in Hume city council, Melbourne.
Data collection: Questionnaires can be used to collect the data as the sample size here is large.
Sampling: In this case, stratified sampling can be used as we need to study different groups in this case. So choosing small groups of similar characteristics will make the study easy.
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