A researcher is conducting a study to determine how knowledgeable teenagers are about making good food choices. She decides to interview teenagers eating at a fast food
Restaurant. The results may be biased because this is a
A) simple random sample.
B) voluntary response sample.
C) convenience sample.
D) stratified sample.
E) census.

Question

Quizplus · Accepted Answer

This is a convenience sample because the researcher is only interviewing teenagers who happen to be eating at a fast food restaurant, which may not be representative of all teenagers or their food choices.

A Researcher Is Conducting a Study to Determine How Knowledgeable