xi 1 2 3 4 5 yi 4 7 6 12 15 d. Develop the estimated...
Homework Answers
so, the regression equation
is
y=0.7+(2.7 * x)
e) predicted value of y when x=5 is
y= 0.7+(2.7*5) = 14.2.
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...
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.
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 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. xi 1 2 3 4 5...
Given are five observations for two variables, x and y. xi 1 2 3 4 5 У|4751216 c. Develop the estimated regression equation by computing the the slope and the y intercept of the estimated regression line (to 1 decimal) d. Use the estimated regression equation to predict the value of y when x- 4 (to 1 decimal)
Given are five observations for two variables, 3 and y. 24 1 2 3 5 4...
Given are five observations for two variables, 3 and y. 24 1 2 3 5 4 7 5 11 15 d. Develop the estimated regression equation by computing the values of bo and bi (to 1 decimals). Ý e. Use the estimated regression equation to predict the value of y when x = 5 (to 1 decimals). >
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...
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...
eBook Given are five observations for two variables, and y. 2 1 13 7 18 Yi...
eBook Given are five observations for two variables, and y. 2 1 13 7 18 Yi 57 46 58 13 16 26 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 2 and y. C. Try to approximate the relationship between 2 and y by drawing a straight line through the data. Only one straight line can be drawn to provide a...
Given are five observations for two variables, x and y. xi Yi 1 4 2 7...
Given are five observations for two variables, x and y. xi Yi 1 4 2 7 3 8 4 5 11 15 The estimated regression equation for these data is y = 1.2 + 2.6x. a. Compute SSE, SST, and SSR using the following equations (to 1 decimal). SSD = 2(y - ý) SST = 2(y; - 5)2 SSR = 2() - 12 SSE SST SSR b. Compute the coefficient of determination 2 (to 3 decimals). Does this least squares...
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...
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 1 2 3 4 5 У|4751216 c. Develop the estimated regression equation by computing the the slope and the y intercept of the estimated regression line (to 1 decimal) d. Use the estimated regression equation to predict the value of y when x- 4 (to 1 decimal)
Given are five observations for two variables, 3 and y. 24 1 2 3 5 4 7 5 11 15 d. Develop the estimated regression equation by computing the values of bo and bi (to 1 decimals). Ý e. Use the estimated regression equation to predict the value of y when x = 5 (to 1 decimals). >
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...
eBook Given are five observations for two variables, and y. 2 1 13 7 18 Yi 57 46 58 13 16 26 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 2 and y. C. Try to approximate the relationship between 2 and y by drawing a straight line through the data. Only one straight line can be drawn to provide a...
Given are five observations for two variables, x and y. xi Yi 1 4 2 7 3 8 4 5 11 15 The estimated regression equation for these data is y = 1.2 + 2.6x. a. Compute SSE, SST, and SSR using the following equations (to 1 decimal). SSD = 2(y - ý) SST = 2(y; - 5)2 SSR = 2() - 12 SSE SST SSR b. Compute the coefficient of determination 2 (to 3 decimals). Does this least squares...
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