Unit 6: Chapter 9, Non experimental research PII Flashcards
sampling frame
a popu- lation as it is defined for the purposes of selecting subjects for a study 231
element
individual mem- ber of a sampling frame 231
open ended question
one that the respondents answer in their own words
close ended question
one that limits the respondents to certain alternatives
social desirability
acquiescence
Inaccurate responses due to people’s tendencey to just agree which makes binary agree or disagree questions kind of risky
Branching items
a set of questions that enable the respondent to move through a survey in dif- ferent ways, depending upon the responses
Likert scale
The Likert scale is a popular self-report scale in which respondents are asked to rate the extent to which they agree or disagree with a statement on a five-point or a seven-point scale. (CC)
response or return rate
in survey research, the percentage of individuals in the sample who return the completed survey(226)
simple random sampling
a sample in which every member of the population has an equal and independent chance of being selected
systematic sampling
a probability sample that is not randomly selected
(starts with a sampling frame)
what is stratified sampling and why would you use it?
a random sample in which two or more sub- samples are represented according to some prede- termined proportion, generally in the same proportion as they exist in the population
(If the population densities were skewed so much that random sampling would not get equal proportions)
cluster sampling
group selected by using clusters or groupings from a larger population
(Rather than taking one-tenth of the students in each class, sampling every student in one-tenth of the classes would be more efficient.)
For what purposes are surveys used? What are the characteristics of surveys?
Distinguish among population, sampling frame, sample and elements. Give an example to illustrate these distinctions.
population-the complete set group of individuals unified by a given characteristic
sampling frame-the decisions made by the researcher as to who will be sampled
sample-data of those tested
element-a sampled piece of the sampling frame