The line of regression of y on x is y = 13.6 - 0.8x and the original data is published as follows:
x: 1 2 3 4 5 6 7 8
y: 14.3 9.5 11.2 11.0 10.4 8.6 8.1 9.6
Given that one of the values of y is misprinted state which value of y is wrong and correct it
In the previous part summation of y was determined to be 80
and summation of xy was determined to be 326.4
Hi,
Sketch the regression line and do a scatter plot, to identify the wrong y.
To correct it, use the given values of 80 and/or 326.4. Thanks!
Cheers,
Wen Shih
hi
i did a plot as you mentioned... seems like the x=2 point and the x=8 point are equally far away from the regression line
Hi,
Consider the difference between the given y value and the value of y based on the regression line.
Thanks!
Cheers,
Wen Shih
oh ok thanks