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©JASONMcCONNELL 2025 ALL RIGHTS RESERVED 1 STT 215 Final Exam Study Guide 100% Verified. Simpson's Paradox - AnswerWhen the direction of the association between two variables switches direction after the introduction of a third variable Quantitative Variable - AnswerObservations that take on numerical values that represent different magnitudes of the variable Statistic - AnswerA numerical summary of a sample taken from the population Lurking Variable - AnswerAn often-unobserved influence that affects the association between the primary variables of interest Margin of Error - AnswerA measure of variability of a statistic from one random sample to another Correlation Coefficient - AnswerDescribes the strength and direction of the linear relationship between two variables Categorical Variable - AnswerEach observation belongs to one of a set of distinct classifications Sampling Bias - AnswerOccurs due to nonrandom samples or undercoverage

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©JASONMcCONNELL 2025 ALL RIGHTS RESERVED




STT 215 Final Exam Study Guide 100%
Verified.



Simpson's Paradox - Answer✔When the direction of the association between two variables
switches direction after the introduction of a third variable



Quantitative Variable - Answer✔Observations that take on numerical values that represent
different magnitudes of the variable



Statistic - Answer✔A numerical summary of a sample taken from the population



Lurking Variable - Answer✔An often-unobserved influence that affects the association between
the primary variables of interest



Margin of Error - Answer✔A measure of variability of a statistic from one random sample to
another



Correlation Coefficient - Answer✔Describes the strength and direction of the linear relationship
between two variables



Categorical Variable - Answer✔Each observation belongs to one of a set of distinct
classifications



Sampling Bias - Answer✔Occurs due to nonrandom samples or undercoverage


1

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