Sampling unit

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How I can choose my sampling units in SPSS? Is it tough one?

1 comment to Sampling unit

  • If the sampling units are not chosen randomly, the representation of population can’t be possible. In SPSS research, Simple Random Sampling without replacement procedure is follow for choosing sampling units. That means, after choosing the first sampling unit, the rest sampling will be choose from the rest of the population. Suppose, the total population contains n sampling units, the first sampling will be chosen randomly. After that, the second sampling unit will be chosen from the rest n-1components. The next one will be chosen from n-2 components. Each component will be chosen randomly and there is no scope of duplication of sampling units. So it is a procedure of choosing sampling unit precisely.

    In SPSS research, to do this task, initially you have to click on data option of your SPSS research data set. Then you will get a sub menu which termed as select cases. After that, a dialog box will come and you need to click on random sample cases. Again a dialog box will be appearing which has two options. One is choosing approximately cases (in percentage) another is exactly cases from the given cases. If you choose the first option then you need to put the value of the proportion that you want from your population. For instance, if you want to choose 10% units then you can click approximately option and then put 10 in the box. Following by continue and then ok you will get the selected cases in your data set.

    Suppose you want to choose 50 units from your first 2000 cases then click the second option and put the figure from the appropriate box. Similarly, by clicking continue then ok and you will get you selected cases. The filter variable will show your selected cases as show value 1. Interestingly, if you run the system again and again you will get different sampling units every time.

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