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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
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
