100 POINT PLEASE HELP Font n
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(Score for Question 2: of 15 points)
2. A linear model for the data in the table is shown in the scatter plot.
у
1 2
2 6
x
y
5
6
6
9
Variable y
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11
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9
8
7-
6
5
4
31
7
11
.
9
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10
13
.
2
1
0
0 1 2 3 4 5 6 7 8 9 10 11
Variable
(a) Which two points should you use to find the equation of the model? Circle the points on the graph.
(b) What is the slope of the linear model? Show your work.
(c) What is the equation of the linear model in point-slope form?
(d) What is the slope-intercept form of the equation you wrote in Part (c)? Show your work.
(e) What is the equation for the least squares regression line? Round the values for a and b to three
decimal places: (Hint: Use a calculator or spreadsheet program.)
States)
IA