Populasi dan Sampel Flashcards
What is a good sample supposed to represent?
As many population characteristics as possible.
Why is a sample from only the people of Bandung not valid for studying the Sundanese people?
It does not represent something that should be measured (the Sundanese people).
What is the recommended sample size range according to Roscoe (1975)?
30 to 500 samples.
What is the minimum number of subsamples required if the sample is divided into subsamples?
30 per subsample.
In multivariate research, how should the sample size relate to the number of variables?
It should be several times larger (recommended: 10 times).
What does Krejcie and Morgan (1970) provide for determining sample size?
A list correlating population size with sample size.
What is Slovin’s Formula used for?
Determining an appropriate sample size.
What is the margin of error typically used in Slovin’s Formula for social sciences?
0.05.
What is the approximate sample size for a population of 3000 people using Slovin’s Formula?
352.
What is the Lemeshow Formula better suited for?
An undefined population.
What does probability sampling allow regarding population selection?
Each unit has a chance (greater than zero) of being selected.
What is a characteristic of non-probability sampling?
Some elements may have a chance of not being selected.
What is simple random sampling?
Each member of the population has an equal chance of being selected.
What is systematic sampling?
Selecting every k-th individual from a divided population frame.
What is stratified sampling?
Dividing the population into subgroups and selecting a simple random sample from each.
What does cluster sampling involve?
Dividing the population into clusters and selecting a random sample of clusters.
What is convenience sampling?
Selection based on convenience considerations.
What is purposive or judgment sampling?
The researcher selects the sample based on their assessment of appropriateness.
What is quota sampling?
A form of proportional stratified sampling, but not selected randomly.
What is snowball sampling?
A method where existing study subjects recruit future subjects from among their acquaintances.
Fill in the blank: A good sample must be valid in _______.
[measurement].
True or False: Non-probability sampling allows for an estimate of sampling error.
False.
What type of sampling is excellent for exploratory research followed by further research?
Convenience sampling.
What should a researcher do when data becomes saturated in snowball sampling?
Stop searching for more participants.
