A nutritional consulting company is trying to find what percentage of the population of a town is overweight. The marketing department contact by telephone 600 people from a list of the entire town's population. About 100 people give answers to the survey. Which of the following is the most significant source of bias in this survey?

A nutritional consulting company is trying to find what percentage of the population of a town is overweight. The marketing department contact by telephone 600 people from a list of the entire town's population. About 100 people give answers to the survey. Which of the following is the most significant source of bias in this survey?

A nutritional consulting company is trying to find what percentage of the population of a town is overweight. The marketing department contact by telephone 600 people from a list of the entire town's population. About 100 people give answers to the survey. Which of the following is the most significant source of bias in this survey?



A) Undercoverage 

B) Response bias 

C) Size of sample

D) Nonresponse

E) Voluntary response bias



Answer: Nonresponse


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