For a survey of American diets a random sample of 1000 people were contacted. Of the 1000 people, 340 people completed the questionnaire. The results of this study, if applied to all Americans, are questionable because of
A) a large margin of error.
B) selection bias.
C) nonresponse bias.
D) response bias.

Question

Quizplus · Accepted Answer

Nonresponse bias is likely because a significant portion of the sampled population did not respond, potentially skewing the results if the non-respondents have different dietary habits than the respondents.

For a Survey of American Diets a Random Sample of 1000