Exam (elaborations)
Soc 380 Exam 2 Questions And Answers Latest Update
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- SOC 380
- Institution
- University Of Washington
Soc 380 Exam 2 Questions And Answers Latest Update
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Solution 2024/2025Pepper
Soc 380 Exam 2 Questions And Answers Latest
Update
probability sampling ANS✔✔ the general term for samples selected in
accord with probability theory.
- often used for large-scale surveys.
-if all members of a population were identical in all respects there would be
no need for careful sampling procedures. However, this is rarely the same.
- a sample of individuals from a population must contain the same
variations that exist in the population.
non-probability sampling ANS✔✔ any technique in which samples are
selected in some way not suggested by probability theory.
reliance on available subjects ANS✔✔ -convenience sampling
-does not allow for control over representativeness
-only justified if less risky methods are unavailable
-researchers must be very cautious about generalizing when this method is
used.
purposive or jusgmental sampling ANS✔✔ a type of nonrpobability sampling
in which the units to be observed are selected no the basis of the
researcher's judgement about which ones will be the most useful or
representative.
-small subsets of a population
-two-group comparison
, Solution 2024/2025
Pepper
- deviant cases
snowball sampling ANS✔✔ a nonprobability sampling method whereby each
person interview may be asked to suggest additional people for
interviewing.
-often used in field research, special populations
quota sampling ANS✔✔ a type of nonprobability sampling in which units are
selcted into a sample on the basis of pre-specified characteristics, so that
the total sample will have the same distribution of characteristics assumed
to exist in the population being studied.
- similar to probability sampling, but has problems: quota frame must
accurate, selection of sample elements may be biased.
infromant ANS✔✔ someone who is well versed in the social phenomenon
that you wish to study and who is willing to tell you what they know about it.
bias ANS✔✔ those selected are not typical nor representative of the larger
population.`
representativeness ANS✔✔ the quality of a sample of having the same
distribution of characteristics as the population from which it was selected.
- samples need not be representative in all respects, only those relevant to
the research.
EPSEM ANS✔✔ equal probability of selection method
, Solution 2024/2025
Pepper
advantages of probability sampling ANS✔✔ 1. probability samples are
typically more representative than other types of samples because biases
are avoided.
2. probability theory permits researchers to estimate the accuracy or
representativeness of the sample.
Element ANS✔✔ that unit of which a population is composed and which is
selected in a sample.
Population ANS✔✔ the theoretically specified aggregation of the elements in
a study
study population ANS✔✔ a sampling method in which each element has an
equal chance of selection independent of any other event in the selection
process.
Random selection ANS✔✔ each element has an equal change of selection
independent of any other event in the selection process
sampling unit ANS✔✔ the element of set of elements considered for
selection in some stage of sampling.
parameter ANS✔✔ a summary description of a given variable in a
population.
Statistic ANS✔✔ the summary description of a variable in a sample, used to
estimate a population parameter.
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