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STT 215 Final Exam Vocab Review Questions
and Answers (100% Correct Answers) Already
Graded A+
Simpson's Paradox— Ans: When the direction of the association
between two variables switches direction after the introduction of a third
variable
© 2026 Assignment Expert
Quantitative Variable— Ans: Observations that take on numerical
values that represent different magnitudes of the variable
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Statistic— Ans: A numerical summary of a sample taken from the
population
Lurking Variable— Ans: An often-unobserved influence that affects the
association between the primary variables of interest
Margin of Error— Ans: A measure of variability of a statistic from one
random sample to another
Correlation Coefficient— Ans: Describes the strength and direction of
the linear relationship between two variables
Categorical Variable— Ans: Each observation belongs to one of a set of
distinct classifications
Sampling Bias— Ans: Occurs due to nonrandom samples or
undercoverage
1
STT 215 Final Exam Vocab Review Questions
and Answers (100% Correct Answers) Already
Graded A+
Simpson's Paradox— Ans: When the direction of the association
between two variables switches direction after the introduction of a third
variable
© 2026 Assignment Expert
Quantitative Variable— Ans: Observations that take on numerical
values that represent different magnitudes of the variable
Guru01 - Stuvia
Statistic— Ans: A numerical summary of a sample taken from the
population
Lurking Variable— Ans: An often-unobserved influence that affects the
association between the primary variables of interest
Margin of Error— Ans: A measure of variability of a statistic from one
random sample to another
Correlation Coefficient— Ans: Describes the strength and direction of
the linear relationship between two variables
Categorical Variable— Ans: Each observation belongs to one of a set of
distinct classifications
Sampling Bias— Ans: Occurs due to nonrandom samples or
undercoverage
