Question: For the multiple regression model ???? = ????0 + ????1????1 + ????2????2 + ????, what is the expected change in ???? when (a) ????1 is

For the multiple regression model ???? = ????0 + ????1????1 + ????2????2 + ????, what is the expected change in ???? when

(a) ????1 is increased by one unit and ????2 is held fixed?

(b) ????2 is increased by one unit and ????1 is held fixed?

(c) ????1 and ????2 are increased by one unit?

(d) ????1 is increased by 5 units and ????2 is held fixed?

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