A researcher is conducting a study to determine how knowledg

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. Why might the results be biased? Because they were taken from a convenience sample. Because they were taken from a stratified sample. Because they were taken from a simple random sample. Because they were taken from a census. Because they were taken from a voluntary response sample.

Solution

(C) this was convenience sample, and may not represent the population