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Scorpion4ik [409]
3 years ago
9

An equation was used to predict possible sales of phones for 6 months. The actual sales of phones are also listed. Actual sales

55 150 325 510 780 990 Predicted sales 40 150 300 500 800 1,000. The sum of the residuals is ______.
Mathematics
2 answers:
Ugo [173]3 years ago
8 0
The residue in each case is the difference between actual and predicted sales. Thus:
55 - 40 = 15
150 - 150 = 0
325 - 300 = 25
510 - 500 = 10
800 - 780 = 20
1000 - 990 = 10
These add up to be:
15 + 25+ 10 +20 +10
= 80
Valentin [98]3 years ago
6 0

Answer:

I'm not sure but I think the answer is 20

Step-by-step explanation:

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