i. Violating the need for successive observations of the dependent variable to be uncorrelated is called autocorrelation.
Ii) If an inverse relationship exists between the dependent variable and independent variables, the regression coefficients for the independent variables are negative.
Iii) Given a multiple linear equation Y' = 5.1 + 2.2X1 - 3.5X2, assuming other things are held constant, an increase in one unit of the second independent variable will cause a -3.5 unit change in Y.
A) (i), (ii) and (iii) are all correct statements
B) (i) and (ii) are correct statements, but not (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements but not (i).
E) All statements are false

Question

Quizplus · Accepted Answer

Autocorrelation refers to the correlation of a signal with a delayed copy of itself, which is a violation in regression analysis. An inverse relationship between dependent and independent variables results in negative regression coefficients. In the given equation, a unit increase in X2 results in a -3.5 change in Y, as indicated by the coefficient of X2.

I Violating the Need for Successive Observations of the Dependent