In the population of New Town, 30 percent of the people work for Bigg Corporation, 30 percent work in the public sector (including education), and 40 percent are self-employed. In a survey of 100 residents of New Town, 40 people worked for Bigg Corporation, 40 percent worked in the public sector, and 20 people were self-employed. This sample was:

Unrepresentative Sample

Explanation:

A sample that doesn't represent the whole of the population then such a sample is said to be unrepresentative. The research is useless if the the sample choosed is not sufficient to represent the whole of the population. The researcher try to mitigate by using a number of sampling techniques to make sure that the sample is a good representative of the population.

The questions clears that the researcher wants to know about the US population's occupation. But what he did is choosed a town of 100 residents and is forming an opinion on that sample. The opinion formed on such a small and unrepresentative sample would be obviously inappropriate.

answer; test-retest;