Homework Answers
solution :
a)option 1 is right answer
b) It appears linear relationship between x and y
c) option A is right answer
d) 
linear regression eqation Y^= 2.5X +1.5
e) the estimated pridicted value Y^=2.5*3+1.5=9
the pridicted value is 9
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Given are five observations for two variables, I and y. X1 1 2 3 4 5...
Given are five observations for two variables, x and y. xi 1 2 3 4 5...
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 8 11 14 Which of the following scatter diagrams accurately represents the data? 1. 2. 3. SelectScatter diagram #1Scatter diagram #2Scatter diagram #3Item 1 What does the scatter diagram indicate about the relationship between the two variables? SelectThere appears to be a linear relationship between x and yThere appears to be a nonlinear relationship between x and yItem 2 Try to...
Li 1 2 3 4 5 Yi 4 5 5 11 13 a. Which of the...
Li 1 2 3 4 5 Yi 4 5 5 11 13 a. Which of the following scatter diagrams accurately represents the data? --05. 05 5 3 -2,5-33,5.4-4,5. 5,5 00 05.. .. ...25... 3,5.4.45 5 5 5 0 , 5 1 , 5 2 ,5.. .3,5 4 4,5 5,5 - Select your answer - b. What does the scatter diagram indicate about the relationship between the two variables? - Select your answer - c. Try to approximate the relationship between...
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 8 6 12 14
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 8 6 12 14
Given are five observations for two variables, x and y. 1 2 3 4 5 3 7 5 11 14
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 5 11 14
Given are five observations for two variables, x and y. xi 1 2 3 4 5...
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 8 5 10 14 (d) Develop the estimated regression equation by computing the values of b0 and b1 using b1 = Σ(xi − x)(yi − y) Σ(xi − x)2 and b0 = y − b1x. ŷ = (e) Use the estimated regression equation to predict the value of y when x = 2.
a. Which of the following scatter diagrams accurately represents the data? +16 +12 +8 0,5 0,5...
a. Which of the following scatter diagrams accurately represents the data? +16 +12 +8 0,5 0,5 1 1,5 7.-2,5.....3,5...4...4,5. 5. 5,5. X Scatter diagram 82 b. What does the scatter diagram indicate about the relationship between the two variables? There appears to be a linear relationship between x and y c. Try to approximate the relationship between I and y by drawing a straight line through the data. The input in the box below will not be graded, but may...
Given are five observations for two variables, x and y. xi 1 2 3 4 5...
Given are five observations for two variables, x and
y.
xi
1
2
3
4
5
yi
3
8
4
10
15
(a)
Develop a scatter diagram for these data.
1 2 3 4 5 g 2 N to Go 4 1 2 0 1 3 4 5 6 1 2 3 (b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? There appears to be a negative linear relationship between x...
Given are five observations for two variables, x and y.
Given are five observations for two variables, x and y.xi12345yi4761214Round your answers to two decimal places. Use Table 1 of Appendix B a. Using the following equation: b. Using the following expression: c. Using the following equation: d. Using the following expression:
Given are five observations for two variables, x and y.
Given are five observations for two variables, x and y.xi 1 2 3 4 5yi 3 7 5 11 14a. Develop the estimated regression equation by computing the values of b0 and b1.(To save you a lot of arithmetic, use the following facts: Σ(xi − ̄x)(yi − ̄y) = 26 and Σ(xi − ̄x)2= 10.)b. Use the estimated regression equation to predict the value of y when x= 4.
Given are five observations for two variables, x and y. xi 3 12 6 20 14...
Given are five observations for two variables, x and
y.
xi
3
12
6
20
14
yi
50
45
55
15
15
(d) Develop the estimated regression equation by computing the
values of b0 and b1 using b1 =
Σ(xi − x)(yi − y)
Σ(xi − x)2
and b0 = y − b1x.
ŷ =
(e) Use the estimated regression equation to predict the value
of y when x = 9.
Observation 1 2 3 4 5 6 7 8...
Li 1 2 3 4 5 Yi 4 5 5 11 13 a. Which of the following scatter diagrams accurately represents the data? --05. 05 5 3 -2,5-33,5.4-4,5. 5,5 00 05.. .. ...25... 3,5.4.45 5 5 5 0 , 5 1 , 5 2 ,5.. .3,5 4 4,5 5,5 - Select your answer - b. What does the scatter diagram indicate about the relationship between the two variables? - Select your answer - c. Try to approximate the relationship between...
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 8 6 12 14
Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 5 11 14
a. Which of the following scatter diagrams accurately represents the data? +16 +12 +8 0,5 0,5 1 1,5 7.-2,5.....3,5...4...4,5. 5. 5,5. X Scatter diagram 82 b. What does the scatter diagram indicate about the relationship between the two variables? There appears to be a linear relationship between x and y c. Try to approximate the relationship between I and y by drawing a straight line through the data. The input in the box below will not be graded, but may...
Given are five observations for two variables, x and
y.
xi
1
2
3
4
5
yi
3
8
4
10
15
(a)
Develop a scatter diagram for these data.
1 2 3 4 5 g 2 N to Go 4 1 2 0 1 3 4 5 6 1 2 3 (b) What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? There appears to be a negative linear relationship between x...
Given are five observations for two variables, x and
y.
xi
3
12
6
20
14
yi
50
45
55
15
15
(d) Develop the estimated regression equation by computing the
values of b0 and b1 using b1 =
Σ(xi − x)(yi − y)
Σ(xi − x)2
and b0 = y − b1x.
ŷ =
(e) Use the estimated regression equation to predict the value
of y when x = 9.
Observation 1 2 3 4 5 6 7 8...
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