Given:
The data table is given.
The equation of trend line is:
To find:
Values for residual table.
Solution:
Formula for residual:
The equation of trend line is:
...(i)
Substituting in (i), we get
The value of y from the table at is 25. So,
Similarly,
Substituting in (i), we get
The value of y from the table at is 28. So,
Substituting in (i), we get
The value of y from the table at is 29. So,
Substituting in (i), we get
The value of y from the table at is 30. So,
Substituting in (i), we get
The value of y from the table at is 32. So,
Therefore, the complete residual table is:
x : 5 6 7 8 9
Residuals : 0 1 0 -1 -1