The sampling method described suffers from a form of bias. Identify the bias, tell how the sample statistic might differ significantly from the population parameter, and suggest how the problem might be corrected.A radio talk show host asks people to call in to voice their opinions on proposed new environmental regulations which will be unfriendly to business and lead to a loss of jobs. He finds that there is very little support for the new regulations.

Question

What will be an ideal response?

Answer 1

There is undercoverage bias. Listeners to the show are not representative of the general population. There is voluntary response bias - those who feel strongly are more likely to respond. There is response bias. The wording of the question is designed to elicit a negative response to the proposed regulations. The rate of support in the sample for the new regulations is likely much lower than the rate in the general population. A random sample obtained from a list of all voters or from a phone book would give a more accurate estimate. The question should also be worded in a more neutral way.