McqMate
| Q. |
A multiple regression model has the form: y = 2 + 3x1 + 4x2. As x1 increases by 1 unit (holding x2 constant), y will |
| A. | increase by 3 units |
| B. | decrease by 3 units |
| C. | increase by 4 units |
| D. | decrease by 4 units |
| Answer» A. increase by 3 units | |
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bhaijaan
2 years ago
The correct answer is to increase by 3 units I don't know why the answer is given as an increase by 4, i have verified it the correct answer is increase by 3
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Anish Vikram Varma
1 year ago
The correct answer is 3 units. This is a fundamental concept in interpreting regression coefficients – they represent the change in the dependent variable associated with a one-unit change in the corresponding independent variable, holding all other variables constant.
In the above question, since the coefficient of X1 is 3, this implies that y changes 3 units for unit change in x1. Since X1 is increased by one unit, Y increases by 3 units.
In the above question, since the coefficient of X1 is 3, this implies that y changes 3 units for unit change in x1. Since X1 is increased by one unit, Y increases by 3 units.
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