January 23rd, 2012 
HostNine A radio talk show host asked listeners to respond either yes or no to the question, “Is the candidate who spends the most on a campaign the most likely to win?” Fifteen people called in and nine said yes.
Can you detect any bias in the selection of the sample?
a) No, there is no bias in the selection of this sample.
b) Yes, nonresponse. Many listeners may not call in.
c) Yes, there is a systematic bias against those that are not listening to the talk show.
d) Yes, voluntary response. Those with the strongest opinions are most likely to call in.
Chosen Answer:
maybe c or d 
maybe my opinion is a bias….. u might need more answers
by: Crayons
on: 12th April 10
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maybe c or d
maybe my opinion is a bias….. u might need more answers
b,c, and d.
All of those could be factors playing in.
b,c and d all look correct. There is definitely bias, but U suspect it wasn’t intended to be unbiased.