a. Using the pairs of values for all
10
points, find the equation of the regression line.b. After removing the point with coordinates
left parenthesis 1 comma 2 right parenthesis(1,2),
use the pairs of values for the remaining
99
points and find the equation of the regression line.c. Compare the results from parts (a) and (b).



Note:
There are 11 pairs of values in the data. Hence we are finding the regression line equation using 11 pairs of values.
a.
Stepby step procedure to find the regression line using Excel software:
The regression line using all 11 pairs of values is given below:
b.
The regression equation line after removing the point (1, 2) is obtained as follows.
Stepby step procedure to find the regression line using Excel software:
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