Question

Explain briefly why a Sample Survey is usually preferred over census survey??
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Answer 1

it's because a sample survery is like a rough draft, that people can use and turn it in to get an easy 100 grade also... A survey based on a portion of the population is called a sample survey. A sample survey is preferred over a census for the following reasons: Conducting a census is very expensive because the size of the population is usually very large.