# Shared Flashcard Set

## Details

RM Quiz 2
Research methods
20
Sociology
10/20/2016

Term
 Internal Validity
Definition
 No other variable but the one that was studied caused the results.
Term
 External Validity
Definition
 The ability to generalize the study results to other groups and settings beyond those in the current experiment
Term
 Construct Validity
Definition
 Accurately represents reality connect to face validity
Term
 Criterion-related
Definition
 connected to standardized ways of measuring
Term
 What is the importance of randomization?
Definition
 Allows us to better ascertain that we are not getting idiosyncratic results aids in increasing generalizability
Term
 Nominal Measurement
Definition
 common sense or dictionary definition
Term
 Ordinal Measurement
Definition
 There is an order, but things like distance is not known
Term
 Interval Measurement
Definition
 Distance between responses are known, but there is no true 0
Term
 Ratio Measurement
Definition
 Distance is known, true zero
Term
 What is operationalization?
Definition
 Process by which we spell out precisely how a concept will be measured
Term
 Population vs. Sample
Definition
 group that includes all the cases in which the researcher is interested A subset of the defined population aka who/ what we actually attempt to study
Term
 Simple Random Sampling Probability or Not Probability
Definition
 probability  all people in the population have an equal chance at being selected. being chose out of a hat
Term
 Systematic Random Sampling Probability or Not Probability
Definition
 probability members from a larger population are selected according to a random starting point and a fixed periodic interval start at a random place, then count every ten after that till you have the desired number of participants
Term
 Stratified Random Sampling Probability or Not Probability
Definition
 Probability  used to equally represent all subgroups/strata (proportionate) or over-represent some subgroups (disproportionate).
Term
 Cluster Sampling Probability or Not Probability
Definition
 Probability seperate clusters within the population are chosen.
Term
 Multistage Cluster Sampling Probability or Not Probability
Definition
 Probability randomly choose clusters and then randomly choose subjects from each cluster
Term
 Convenience Sampling Probability or Not Probability
Definition
 nonprobability literally who is around
Term
 Quota Sampling Probability or Not Probability
Definition
 Nonprobability  who is around that best fits into desired catergory
Term
 Purposive Sampling Probability or Not Probability
Definition
 Nonprobability convenience sampling but choosing respondents specifically because of some key aspect
Term
 Snowball Sampling Probability or Not Probability
Definition
 Nonprobability having an initial respondent refer others to participate
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