The Canadian Census collects demographic data for specific groups such as lone-p

Question

The Canadian Census collects demographic data for specific groups such as lone-parent families, seniors, and those from specific language groups via what is commonly referred to as the "Short Form." The Short Form questionnaire is issued to each household in Canada, and all Canadian residents are legally required to complete the form. In addition to the "Short Form," a more detailed (long) form, sent for completion to certain households only, used to be mandatory, but became voluntary instead at the time of the 2011 census. What are the impacts of the change from mandatory to voluntary participation in the longer census?

Choose the correct answer:

A. The move to voluntary completion of the more detailed form introduces nonresponse bias. Since the survey is longer, very few households if any will elect to complete it instead of the Short Form, severely impacting the results.

B. The move to voluntary completion of the more detailed form introduces voluntary response bias. In particular, since disadvantaged households may choose not to complete the form, the results may underrepresent those groups in Canadian society.

C. The move to voluntary completion of the more detailed form adds validity to the census. In particular, people who provide inaccurate answers out of spite from being forced to participate will no longer be factored in.

D. The move to voluntary completion of the more detailed form introduces response bias. The households that receive the extra form have the opportunity to be counted multiple times and end up overrepresented in the results.

Explanation / Answer

The change from mandatory to voluntary participation will introduce voluntary response bias and disadvantaged housholds won't prefer to fill it which result into a sample which is non representative of entire population.

Hence,

Option B is correct.

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