A simple linear regression of monthly water usage yyy on household size xxx produced the fitted line
y^=2.5+1.4x\hat{y} = 2.5 + 1.4xy^=2.5+1.4x
One household in the dataset has x=4x = 4x=4 and an observed value of y=7.3y = 7.3y=7.3.
What is the residual for this household?
Select all that apply.
−0.80-0.80−0.80
+8.10+8.10+8.10
+1.70+1.70+1.70
+0.80+0.80+0.80