Which of the following statements about sampling is true?
A. It is pretty easy to draw a random sample of the population in order to measure public opinion accurately.
B. The larger the sample the more closely the sample's answers will closely approximate the answers if the entire population could be asked.
C. Larger samples are always better so the results from a sample of 2,000 will be twice as accurate as the results from a sample of 1,000.
D. Pollsters who can draw good samples can virtually eliminate any errors in polling.
Answer: B
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Of the issues listed in Table 8.4, on which do we see the greatest difference between younger and older Americans?
a. allowing Social Security funds to be invested in the stock market b. ensuring women access to abortion services c. expanding government services in general d. favoring same-sex marriages e. supporting cuts in military spending to reduce the deficit
What is one advantage of using graphic analysis rather than inferential statistics to analyze data?
a. graphic analysis is more powerful b. graphic analysis is a more sophisticated approach to data analysis c. research shows that graphic analysis is more accurate d. graphic analyses are unaffected by error variance e. only relatively large effects of the independent variable will be interpreted