Answer:
7
Explanation:
Given :
Actual weight (ounces) Predicted weight (ounces) 21
9 9
15 12
16 15
20 18
20 21
26 24
To Find : the sum of residuals
Solution :
Actual - Predicted=Residuals
9-9=0
15-12=3
16-15=1
20-18=2
20-21=-1
26-24=2
So, the residuals are 0,3,1,2, -1,2
Thus the sum of all residuals = 0+3+1+2-1+2 = 7
Hence the sum of residuals is 7