OpenStax, Introductory Business Statistics 2e §13.4 The Regression Equation · Exercise 2 · Statistics · Regression & correlation
The Regression Equation · Exercise 2
Consider a sample least squares regression analysis between a dependent variable (Y) and an independent variable (X). A sample correlation coefficient of −1 (minus one) tells us that
(a) there is no relationship between Y and X in the sample
(b) there is no relationship between Y and X in the population
(c) there is a perfect negative relationship between Y and X in the population
(d) there is a perfect negative relationship between Y and X in the sample.
OpenStax, Introductory Business Statistics 2e · §13.4 The Regression Equation · Exercise 2
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