21.5 Data collection

Data collection

When you need to conduct a survey in order to collect data, who would you ask for the data? In what situations will you be surveying the whole population or picking a sample? If you are going to pick a sample, you still need to decide the details of sampling. You may choose from, for instance, stratified sampling, convenience sampling and voluntary response sampling.


  • 1.
    Who would you survey in each of the following situation? Identify if you would use the population or a sample. Explain.
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Data collection

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