Stats (Booo)

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Last updated 11:53 AM on 7/1/26
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20 Terms

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Statistic

Numerical summary of a sample

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Parameter

Numerical summary of a population

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Discrete

Countable

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Continuous

Measured

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Nominal Level of Measurement

categorizes

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Ordinal Level of Measurement

Categorizes and ranks

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Interval Level of Measurement

Zero does NOT mean absence of quantity

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Ratio Level of Measurement

Zero DOES mean absence of quantity

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Explanatory variable

X, affects value of response

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Response variable

Y, affected by explanatory

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Cross sectional study

Snapshot of time

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Case control study

Retrospective

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Cohort Study

Follow group over time

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Stratified sample

Population separated into strata

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Systematic sample

Picks every k individual

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Cluster sample

All individuals in group

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Convenience sample

Individuals easily obtained, results suspect

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Sampling bias

technique favors 1 part of population

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Nonresponse bias

Individuals don’t respond

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Response bias

answers don’t reflect respondents