Assignment 2 00 10 Part 1 of 20- 01 1 0 Question 1 of 20 5), and (1, 2), the res

Question

Assignment 2 00 10 Part 1 of 20- 01 1 0 Question 1 of 20 5), and (1, 2), the residual sum of square +2r has been fitted to the data points (4, 8), If the regression line, will be A.15 ·OB, 22 ·°C.10 OD 13 Reset Selection Mark for Review Part 2 of 20-Q2 Question 2 of 20 Click to see additional instructions 1.0 Points Suppose we estimate a regression of the gallons of paint sold on the price of each gallon and regression line y = 268.7-18217x Predict how many gallons would be sold if the price is $7 per gallon? Mark for Review What's This? Part 3 of 20-03 Question 3 of 20 Click to see additional instructions 10 Pc Given the regression equation: ya 100 + 21X, an increase in X of 5 units will yield an expected increase in y of units Mark for Review What's This?

Explanation / Answer

Ans:

1)

Residual sum of squares=22

Option B is correct.

2)

y'=268.7-18.217x

when x=7

y'=268.7-18.217*7=141.181

3)

y'=100+21X

slope=21

So, increase in X of 5 units,will yield an expected increase in y of 21*5=105 units

x y y'=3+2x (y-y')^2 4 8 11 9 2 5 7 4 1 2 5 9 Total 22

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