In a survey of 500 randomly selected respondents,360 respondents (72%)said they want the United Nations (U.N.)headquarters to remain in the United States.A TV news show conducted a call-in survey and asked the same question.Of the 186,000 who phoned in their response,124,620 people (67%)said they want the U.N.out of the United States.The most reasonable statement about these different findings is that
A) the call-in survey results should be believed because of the larger number of people who responded they want the U.N. out of the United States.
B) the large sample size for the call-in survey indicates it is a more representative sample.
C) the findings for the randomly selected sample more likely represent the views of the population.
D) call-in surveys lead to more reliable findings.

Question

Quizplus · Accepted Answer

The findings for the randomly selected sample are more likely to represent the true views of the population because the sample was randomly selected, which reduces the risk of bias in the results. The call-in survey, on the other hand, suffers from self-selection bias since only those who are interested in the topic or have a strong opinion on it are likely to participate. Therefore, the results of the call-in survey are less likely to be representative of the population. The larger sample size of the call-in survey does not necessarily make it more representative since the quality of the sample matters more than the quantity.

In a Survey of 500 Randomly Selected Respondents,360 Respondents (72%)said