1 Exampromax - Stuvia US
STA 210 Ch 7 HW Questions and Answers
100% Correct Answers Already Graded A+
Q: Other samples of 5,000 people, asked the same question, would not
produce a sample percentage of 34%. What is this kind of variability called?
Ans: Sampling variability
Q: If the sample had truly been a random sample of all university and
college students, what percentage of women would you expect to have been
in the sample?
Exampromax - Stuvia US
Ans: About 50%
Q: 3a
Ans: 1.430
Q: What is meant by the following statement that appears in the
Methodology section?
"Therefore, Harris Interactive avoids the words 'margin of error' as they are
misleading."
Ans: There are so many different kinds of error that go into a survey, only one
being random sampling error, which is what the MOE addresses.
Q: What is meant by the following statement that appears in the
Methodology section?
"Because the sampling is based on those who agreed to participate in the
Harris Interactive panel, no estimates of theoretical sampling error can be
calculated."
Ans: Even if there were no non-sampling errors, the MOE is suspect because the
data are based on a sample from those who agreed to participate.
STA 210 Ch 7 HW Questions and Answers
100% Correct Answers Already Graded A+
Q: Other samples of 5,000 people, asked the same question, would not
produce a sample percentage of 34%. What is this kind of variability called?
Ans: Sampling variability
Q: If the sample had truly been a random sample of all university and
college students, what percentage of women would you expect to have been
in the sample?
Exampromax - Stuvia US
Ans: About 50%
Q: 3a
Ans: 1.430
Q: What is meant by the following statement that appears in the
Methodology section?
"Therefore, Harris Interactive avoids the words 'margin of error' as they are
misleading."
Ans: There are so many different kinds of error that go into a survey, only one
being random sampling error, which is what the MOE addresses.
Q: What is meant by the following statement that appears in the
Methodology section?
"Because the sampling is based on those who agreed to participate in the
Harris Interactive panel, no estimates of theoretical sampling error can be
calculated."
Ans: Even if there were no non-sampling errors, the MOE is suspect because the
data are based on a sample from those who agreed to participate.
