For a given set of pair data, the correlation and regression coefficients have been calculated as being equal to r, b and bxy respectively. Now, each of values in the x series is divided by 4. What effect does it have on each of the coefficients?
1
The three coefficients remain unchanged.
2
There is no change in r. byx change to byx / 4 and bxy changes to 4bxy.
3
Each of coefficient will be reduced by on fourth of its value.
4
There is no change in r but byx changes to 4byx and bxy changes to bxy/4.