Question
If we subtract 5 from all of the x measurements, what happens to the sample correlation...
If we subtract 5 from all of the x measurements, what happens to the sample correlation r? What happens to the fitted regression slope βˆ 1? What about the intercept βˆ 0?
Homework Answers
Answer #1
If we subtract 5 from all of the x measurements, sample correlation will remain the same.
The fitted regression slope 
and since in the new set up both r, sx will remain same
and sy is definitely unaffected, so fitted regression
slope will also remain the same
Since in the new set up, 
will
decrease by 5 units, so 
will increase by 
unit.
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