Bias? Political analyst Michael Barone has written that“conservatives are more likely than others to refuse torespond to polls, particularly those polls taken by mediaoutlets that conservatives consider biased” (Source: TheWeekly Standard, March 10, 1997). The Pew Research Foundation tested this assertion by asking the same ques-tions in a national survey run by standard methods and in a more rigorous survey that was a true SRS with carefulfollow-up to encourage participation. The response ratein the “standard survey” was 42%. The response rate inthe “rigorous survey” was 71%.a) What kind of bias does Barone claim may exist in polls?b) What is the population for these surveys?c) On the question of political position, the Pewresearchers report the following table:What makes you think these results are incomplete?d) The Pew researchers report that differences betweenopinions expressed on the two surveys were notstatistically significant. Explain what “not statisticallysignificant” means in this context. StandardSurveyRigorousSurveyConservative 37% 35%Moderate 40% 41%Liberal 19% 20%
Bias? Political analyst Michael Barone has written that“conservatives are more likely than others to refuse torespond to polls, particularly those polls taken by mediaoutlets that conservatives consider biased” (Source: TheWeekly Standard, March 10, 1997). The Pew Research Foundation tested this assertion by asking the same ques-tions in a national survey run by standard methods and in a more rigorous survey that was a true SRS with carefulfollow-up to encourage participation. The response ratein the “standard survey” was 42%. The response rate inthe “rigorous survey” was 71%.a) What kind of bias does Barone claim may exist in polls?b) What is the population for these surveys?c) On the question of political position, the Pewresearchers report the following table:What makes you think these results are incomplete?d) The Pew researchers report that differences betweenopinions expressed on the two surveys were notstatistically significant. Explain what “not statisticallysignificant” means in this context. StandardSurveyRigorousSurveyConservative 37% 35%Moderate 40% 41%Liberal 19% 20%
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Bias? Political analyst Michael Barone has written that
“conservatives are more likely than others to refuse to
respond to polls, particularly those polls taken by media
outlets that conservatives consider biased” (Source: The
Weekly Standard, March 10, 1997). The Pew Research
“conservatives are more likely than others to refuse to
respond to polls, particularly those polls taken by media
outlets that conservatives consider biased” (Source: The
Weekly Standard, March 10, 1997). The Pew Research
Foundation tested this assertion by asking the same ques-
tions in a national survey run by standard methods and in
tions in a national survey run by standard methods and in
a more rigorous survey that was a true SRS with careful
follow-up to encourage participation. The response rate
in the “standard survey” was 42%. The response rate in
the “rigorous survey” was 71%.
a) What kind of bias does Barone claim may exist in polls?
b) What is the population for these surveys?
c) On the question of political position, the Pew
researchers report the following table:What makes you think these results are incomplete?
d) The Pew researchers report that differences between
opinions expressed on the two surveys were not
statistically significant. Explain what “not statistically
significant” means in this context.
follow-up to encourage participation. The response rate
in the “standard survey” was 42%. The response rate in
the “rigorous survey” was 71%.
a) What kind of bias does Barone claim may exist in polls?
b) What is the population for these surveys?
c) On the question of political position, the Pew
researchers report the following table:What makes you think these results are incomplete?
d) The Pew researchers report that differences between
opinions expressed on the two surveys were not
statistically significant. Explain what “not statistically
significant” means in this context.
Standard
Survey
Rigorous
Survey
Conservative 37% 35%
Moderate 40% 41%
Liberal 19% 20%
Survey
Rigorous
Survey
Conservative 37% 35%
Moderate 40% 41%
Liberal 19% 20%
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