Question

question 11 (1 point)
(05.06 mc)
an equation was used to predict possible weights of puppies at 6 months of age. the actual weights of the puppies are also listed.
actual weight (ounces) 9 15 16 20 20 26
predicted weight (ounces) 9 12 15 18 21 24
the sum of the residuals is ______.
○ a 0
○ b 7
○ c 9
○ d 26

Explanation:

Step1: Calculate each residual

Residual = Actual weight - Predicted weight

• $9 - 9 = 0$
• $15 - 12 = 3$
• $16 - 15 = 1$
• $20 - 18 = 2$
• $20 - 21 = -1$
• $26 - 24 = 2$

Step2: Sum all residuals

$0 + 3 + 1 + 2 + (-1) + 2$

Answer:

b. 7