terms
A well-defined group all with specific attributes
Population
Also known as judgmental or theoretical sampling, is a type of non-probable sampling, most often used in qualitative research.
Purposive Sampling
When a study has either an insufficient sample size or is biased to participants.
External Validity of Sample Size
Probability sampling occurs when every subject, object, or element has an ____ chance of being chosen.
Equal
A researcher performs a survey on all wal-mart shoppers in Altantic Canada to determine their shopping experience.
Cluster Sampling
A small sub-set of a population
Sample
The subjects are not randomly selected for each stratum, but instead computed proportionally or disproportionally to the population under the study
Quota Sampling
When a study has individuals with specific characteristics generalized as a group.
External Validity of Selection
Groups
A group of lung cancer patients and people who have previously had the disease are recruited for a study on how lung cancer affects the ADLs of individuals.
Purposive Sampling
The sample is not randomly selected and the inclusion and extent to which the sample represents the population are unknown
Non-Probability Sample
Individuals or elements of the population are selected from a list by taking every kth (sampling interval) individual
Systemic Sampling
When a study has members of different settings participating.
External Validity of Setting
Convenience sampling does not use a ____ selection of participants.
Random
Individuals that have entered a draw to win a prize.
Simple Random Sampling
a smaller subgroup divided from a population, based on specific characteristics.
Strata
Sometimes called accidental or non-random sampling, is the collection of data from subjects or objects readily available or easily accessible to the researcher
Convenience Sampling
When the results of a study differ based on the period of time it was performed.
External Validity of History
Systematic sampling selects individuals or groups by taking every ___ individual.
Kth
A group of people in the same social circle are recruited for a survey. The researcher asks each person of the group to refer members of their family to participate as well.
Network Sampling
Refers to the sampling interval of systemic sampling.
Kth
Used in situations in which there are limited formal lists or ways of reaching potential subjects.
Network Sampling
The extent that the study results can be generalized from the sample to other subjects, populations, measuring instruments, and settings.
External Validity
Network sampling is used in situations which there are ____ formal lists of reaching subjects.
Limited
A researcher performs a study with 50 men and 100 women. The researcher obtains a sample based on the same percentages, such as 5 men and 10 women in a 15-person subset.
Proportionate Quota Sampling