A manipulation is when a researcher makes slight changes to a stimulus.
take place at 7-11, Stop & Go or other convenience stores
are nonprobability samples
are typically not representative of the entire population
Both a and b
Both b and c
9. The distinguishing feature of probability samples is that:
A.they involve personal judgment somewhere in the selection of sample elements
B.each population element has an equal chance of being included in the sample and every combination of n population element is a sample possibility
C.each population element has a known chance of being included in the sample
D.they will always be more representative of the population than nonprobability samples
E.each population element has an equal chance of being included in the sample
10. While giving guidelines to her field interviewing staff, a researcher states, “I want you to interview every tenth customer entering a K-Mart store at the following key sites.” This is an example of __ sampling.
11. Graphics Rating Scales’ ability to provide infinite rating responses to a particular question is desirable in all situations.
12. When we repeat a measurement on an individual or group of individuals and do not get the same score as the first time we did the measurement (assuming the characteristic being measured has not changed), a ___ error is present
13.Providing a “Don’t know” or “Not applicable” response allows respondents to opt-in.