With a given precision range, the amount of confidence is indirectly related to the size
of the sample.
a. True
b. False
Which of the following is FALSE?
a. New sources of nonsampling error are being discovered all the time.
b. A large sample is much more likely to produce a “valid” result than a small sample is.
c. Total error, rather than any single type of error, is the key in a research investigation.
d. Sampling error can be estimated.
e. Nonsampling error is usually more troublesome than sampling error.
Which of the following is TRUE?
a. It is generally true that bias caused by interviewer expectations will balance out if a
sufficiently large number of interviews is used.
b. The behavior of either interviewer or respondent occurs merely as a physical reaction
to the behavior of the other.
c. Questions which state the alternative answers and multiple choice questions are
particularly recommended in studies where personal interviews are used because they
are not subject to interviewer bias.
d. The empirical evidence suggests that an interviewer with strong positive attitudes
toward a particular issue will tend to secure more favorable responses than an
interviewer with strong negative attitudes.
e. All of the above statements are true.
There is nothing wrong with the following question: “How much do you think you
would pay for a pair of sunglasses that will protect your eyes from the sun’s harmful
ultraviolet rays, which are known to cause blindness?”
a. True
b. False
Which of the following is NOT a recommended practice for coding data and entering it
into a file?
a. Assign specific column locations for particular variables.
b. When a question allows multiple responses, use the same variable for each response
option.
c. Use only numeric codes, not letters of the alphabet or special characters like @.
d. Use standard codes for “no information”.
e. Code a respondent identification number on each record.
Which of the following has NOT been shown to be effective in decreasing the number
of refusals?
a. The use of incentives
b. Selling the respondent on the value of the research
c. Use of experienced interviewers
d. Guarantees of anonymity
e. All of the above have been shown to be effective.
Refer to Scenario17.4:
The estimated value of the standard error of the mean is
a. 2.6.
b. 3.0.
c. 1.6.
d. 0.6.
e. 0.9.
If we were to ask college students, “To what extent do they value a college degree?”
which type of sample plan would be most appropriate?
a. Any probability sampling plan would be useful.
b. A stratified sample because we would expect the answers to vary by strata: freshmen,
sophomore, junior, and senior.
c. A cluster sample because we would expect the answers to vary by cluste: freshmen,
sophomore, junior, and senior.
d. An area sample because we would expect the answers to vary by area: freshmen,
sophomore, junior, and senior.
e. None of the above would be appropriate. In fact, it would be best to use a
nonprobability sampling technique.
The_______is used to adjust the number of refusal and not-at-homes to reflect the fact t
hat many of them would not have qualified to participate in the survey even had we
successfully contacted them and gotten them to agree to participate.
a. eligibility percentage
b. screening question
c. contact rate
d. response rate
e. None of the above.
Which of the following pairs of charts are used for similar purposes?
a. Pie chart and one-scale bar chart
b. Line chart and two-scale bar chart
c. Stratum chart and divided bar chart
d. Both a and b.
e. a, b, and c.