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Chapter 1: Problem 5

Briefly explain the difference between a census and a sample survey. Why is conducting a sample survey preferable to conducting a census?

Short Answer

Expert verified
A Census is a data collection method that involves gathering data from every member of a population, while a sample survey collects data from a representative subset of the population. A sample survey is usually preferable because it's more time and cost efficient than conducting a census. With proper statistical techniques, the results derived from a well-conducted sample survey can be just as accurate as those from a census.

Step by step solution

01

Define Census

A Census refers to data collection method where information is gathered from every member of the entire population.
02

Define Sample Survey

A Sample Survey, on the other hand, is a method where information is collected from a subset of the entire population. The subset selected is ideally representative of the larger population in order to facilitate accurate extrapolations.
03

Contrast Census and Sample Survey

While both census and sample survey are methods of data collection, the main difference lies in their scope. A census collects data from every individual in a population, which is exhaustive and time-consuming. A sample survey collects data from only a subset of the population, which is significantly faster and less resource-intensive.
04

Explain Preference for Sample Survey

Sample surveys are usually preferred over census because they are more cost and time efficient. It is easier and quicker to collect data from a subset of the population than from the entire population. Also, issues of non-response can be more manageable in a sample survey as compared to a census. With the right statistical techniques, the results obtained from a well-chosen sample can be just as accurate as those from a census.

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