Study Questions August 31 September 4
Lauren Napolitano
1.) Define sampling.
Sampling is used for a poll or survey, and it is the selection of a smaller
group of people within a larger population.
2.) What is the preferred mode of sampling?
The preferred mode of sampling is probability sampling because it is
usually considered the main feature that makes a poll or survey
scientific.
3.) What’s the difference between probability and nonprobability
sampling?
The difference between probability and nonprobability sampling is
that probability sampling is scientific; whereas nonprobability
sampling is not.
Also, nonprobability sampling allows respondents to
select themselves (or selfselect) into a sample.
Probability sampling
chooses a careful, yet random group of respondents.
Another form of
nonprobability sampling is choosing respondents by convenience.
4.) What is simple random sampling?
In simple random sampling, everyone in a population has an equal
chance of being selected to participate in a survey as part of the
sample.
In order to have a simple random sample, there must be a list
of everyone in the population that you wish to poll.
From there, each
person is assigned a number, and these numbers are randomly
selected out of a hat, or randomly generated by a computer.
Simple
random sampling can only be used when a complete and current
listing of the population is available.
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