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Scilla [17]
2 years ago
8

An equation was used to predict possible sales of phones for 6 months. The actual sales of phones are also listed.Actual sales 5

5 150 325 510 780 990Predicted sales 40 150 300 500 800 1,000The sum of the residuals is ______.Numerical Answers Expected!Answer for Blank 1:
Mathematics
1 answer:
Vikki [24]2 years ago
3 0

Answer:

20

Step-by-step explanation:

To calculate the sum of the residuals, subtract the predicted sales from the actual sales in the table below.

Actual sales 55 150 325 510 780 990

Predicted sales 40 150 300 500 800 1,000

This will show the change between them. Add each residual to find the sum.

55 - 40 = 15

150 - 150 = 0

325 - 300 = 25

510 - 500 = 10

780 - 800 = -20

990 - 1000 = -10

These add up to be 15 + 25+ 10 +-20 +-10  = 20

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