A newspaper publishing company wishes to estimate the mean number of newspaper subscriptions per household in a newly developed town. The company divided the town into 200 non-overlapping geographic areas among which ten areas were randomly selected. The number of newspapers subscripted to by each household in a sampled block was then recorded.
i) Identity the sampling method that the company has adopted.
ii) Explain why the use of simple random sampling is not efficient here.
sample
2008-04-15 8:11 am
回答 (1)
2008-04-16 7:55 pm
✔ 最佳答案
(I)The company uses Cluster sampling
(II)
Simple random sampling is not efficient
Need a lot of travel and other administrative costs. For example, one sample may live in Hong Kong but the other one lives in New Territories.
Simple random sampling needs a sampling frame for the entire population which is not easy obtained
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