In a simple linear regression model (One independent variable), If we change the input variable by 1 unit. How much output variable will change?(a) by 1(b) no change(c) by intercept(d) by its slopeThe question was asked at a job interview.The question is from Linear Regression topic in division Commands, Packages, Visualizing Data and Linear Regression of R Programming

In a simple linear regression model (One independent variable), If we

1.	In a simple linear regression model (One independent variable), If we change the input variable by 1 unit. How much output variable will change?(a) by 1(b) no change(c) by intercept(d) by its slopeThe question was asked at a job interview.The question is from Linear Regression topic in division Commands, Packages, Visualizing Data and Linear Regression of R Programming
Answer» The CORRECT answer is (d) by its SLOPE To explain I WOULD say: For linear regression Y=a+bx+ERROR. If neglect error then Y=a+bx. If X increases by 1, then Y = a+b(x+1) which implies Y=a+bx+b. So Y increases by its slope.

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