QMET 251 – Exam 2 Vocabulary Study Guide & Quantitative Methods
Review
statistics - correct answer ✔✔calculations performed on SAMPLE DATA
parameter - correct answer ✔✔calculations performed on population data
destructiveness - correct answer ✔✔sometimes we have to destroy something to learn more
about it.
timeliness - correct answer ✔✔sometimes its better to have partial info now than full info later
cost - correct answer ✔✔spending too much money
impossibility - correct answer ✔✔can't possibly talk to everyone because people move around
or homeless people have no records of them
probability sample: simple random samples - correct answer ✔✔by far the most common type
of probability sample. every item in the population has a chance of being selected.
probability sample: stratified sample - correct answer ✔✔when the population is divided into
seperate groups known as strata then a random sample is performed on each group
probability sample: cluster sample - correct answer ✔✔when the population is divided into
seperate groups, usually based on geography then, samples are taken of each group
Review
statistics - correct answer ✔✔calculations performed on SAMPLE DATA
parameter - correct answer ✔✔calculations performed on population data
destructiveness - correct answer ✔✔sometimes we have to destroy something to learn more
about it.
timeliness - correct answer ✔✔sometimes its better to have partial info now than full info later
cost - correct answer ✔✔spending too much money
impossibility - correct answer ✔✔can't possibly talk to everyone because people move around
or homeless people have no records of them
probability sample: simple random samples - correct answer ✔✔by far the most common type
of probability sample. every item in the population has a chance of being selected.
probability sample: stratified sample - correct answer ✔✔when the population is divided into
seperate groups known as strata then a random sample is performed on each group
probability sample: cluster sample - correct answer ✔✔when the population is divided into
seperate groups, usually based on geography then, samples are taken of each group
