1. In a multiple regression problem involving two independentvariables, if b 1 i
ID: 2916402 • Letter: 1
Question
1. In a multiple regression problem involving two independentvariables, if b1 is computed to be +2.0, itmeans that A)the estimated average of Y increases by 2 units for eachincrease of 1 unit of X1, holdingX2 constant.B)the relationship between X1 and Y issignificant.
C)the estimated average of Y is 2 whenX1 equals zero.
D)the estimated average of Y increases by 2 units for eachincrease of 1 unit of X1, without regard toX2.
2. The coefficient of multiple determinationr2Y.12 A)measures the proportion of variation in Y that isexplained by X1 andX2.
B)measures the variation around the predicted regressionequation.
C)measures the proportion of variation in Y that isexplained by X1 holding X2constant.
D)will have the same sign asb1.
3. In a multiple regression model, which of the following iscorrect regarding the value of the adjustedr2? A)It can be larger than 1.
B)It can be negative.
C)It has to be larger than the coefficient of multipledetermination.
D)It has to be positive.
1. In a multiple regression problem involving two independentvariables, if b1 is computed to be +2.0, itmeans that A)the estimated average of Y increases by 2 units for eachincrease of 1 unit of X1, holdingX2 constant.
B)the relationship between X1 and Y issignificant.
C)the estimated average of Y is 2 whenX1 equals zero.
D)the estimated average of Y increases by 2 units for eachincrease of 1 unit of X1, without regard toX2.
In a multiple regression problem involving two independentvariables, if b1 is computed to be +2.0, itmeans that 2. The coefficient of multiple determinationr2Y.12 A)measures the proportion of variation in Y that isexplained by X1 andX2.
B)measures the variation around the predicted regressionequation.
C)measures the proportion of variation in Y that isexplained by X1 holding X2constant.
D)will have the same sign asb1.
2. The coefficient of multiple determinationr2Y.12 A)measures the proportion of variation in Y that isexplained by X1 andX2.
B)measures the variation around the predicted regressionequation.
C)measures the proportion of variation in Y that isexplained by X1 holding X2constant.
D)will have the same sign asb1.
The coefficient of multiple determinationr2Y.12 3. In a multiple regression model, which of the following iscorrect regarding the value of the adjustedr2? A)It can be larger than 1.
B)It can be negative.
C)It has to be larger than the coefficient of multipledetermination.
D)It has to be positive.
3. In a multiple regression model, which of the following iscorrect regarding the value of the adjustedr2? A)It can be larger than 1.
B)It can be negative.
C)It has to be larger than the coefficient of multipledetermination.
D)It has to be positive.
In a multiple regression model, which of the following iscorrect regarding the value of the adjustedr2?
Explanation / Answer
1)A) The estimated average of Y increases by 2 units for eachincrease of 1 unit of X1, holding X2 constant. 2)A) measures the proportion of variation in Y that is explained byX1 and X2. 3)D) it has to be positive.
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