Obs. 1 2 3 4 6 7 8 9 10 00 Xu X 5 s LD 00 6 14 55 12 15 16 16 19 Y 23 16 25 ~~ 28 13 51 37 51 51 788 56 60 Y-hat 0 0 0 OO 0 0 0 0 23 16 25 ~~ 28 10 m 51 37 51 788 51 56 60 e² 529 256 625 784 2601 1369 2601 2601 3136 3600 Your Model Bo B₁ Sum of Error SSE SSX S.E. of the Estimate S.E. of B₁ 398 18102 I I 1 I

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.FOM: Focus On Modeling: Fitting Lines To Data
Problem 12P: Demand for Candy Bars In this problem you will determine a linear demand equation that describes the...
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first image is the assignment, second image is the data table

A
B
Obs.
1
2
3
st
4
5
01
6
7
5600
10
U
X
5
5
LO
6
8405 1615 19
14
12
15
D
Y
23
16
25
28
in m
51
37
51
51
56
60
E
Y-hat
0
0
0
0
0
0
0
0
OO
0
0
F
e
3
23
16
25
28
51
37
51
51
56
60
G
529
256
625
784
2601
1369
2601
2601
3136
3600
H
Your Model
Bo
B₁
Sum of Error
SSE
SSX
S.E. of the Estimate
S.E. of B₁
K
398
18102
I
I
i
I
I
L
Transcribed Image Text:A B Obs. 1 2 3 st 4 5 01 6 7 5600 10 U X 5 5 LO 6 8405 1615 19 14 12 15 D Y 23 16 25 28 in m 51 37 51 51 56 60 E Y-hat 0 0 0 0 0 0 0 0 OO 0 0 F e 3 23 16 25 28 51 37 51 51 56 60 G 529 256 625 784 2601 1369 2601 2601 3136 3600 H Your Model Bo B₁ Sum of Error SSE SSX S.E. of the Estimate S.E. of B₁ K 398 18102 I I i I I L
regression predictions that depend on the values found in the table called "Your Model". Here is the
breakdown of the data in the first table:
>> Obs. is the observation number. It runs from 1 to 10.
>>
X is the set of values for an independent variable being used to predict the dependent variable.
Y is the set of values for the dependent variable being predicted by the regression.
>>
>>
Y-hat is the set of predicted values found by multiplying X by the coefficient for B₁ and then
adding the value for B₂. This is what the regression line predicts for Y for a given value of X.
>>e is the set of residuals for the regression. It is the difference between Y and Y-hat.
>> e² is the residuals squared. That simple.
Investigate the table of data and familiarize yourself with the equations used to calculate the regression
predictions. Then start entering different values for B₁ and B₂ in the "Your Model" table. You'll notice
things change when you do this. "Sum of Error" adds up the values of column F in the data table. "SSE"
adds up the values in column G in the data table, and is otherwise known as the "Sum of Squares Error".
Below this is the SSX or "Sum of Squares for X" which you will need to calculate the S.E. of the Estimate,
or "Standard Error of the Estimate" below. And in the last row, you have to calculate the S.E. of B₁ or the
"Standard Error of the Slope".
Sxy cov(x,y)
var (x)
B₁ = 53/2=
=
SZ
Ba =ỳ - B
Se (S. E. of the Estimate) :
SB, (S.E.of B₁) = √SSX
SSE
n-2
You need to calculate values for each of the tan cells in the spreadsheet. For B₁ and 3₂ you will need to
write your own formulas which reference the data for X and Y in the data table. For SSX, remember that
the SSX is the numerator of the variance of X, which you can find by multiplying the variance by n-1. For
S.E. of the Estimate and the S.E. of B₁ you will again need to write your own formula which uses the SSE,
SSX, and the count of observations.
Transcribed Image Text:regression predictions that depend on the values found in the table called "Your Model". Here is the breakdown of the data in the first table: >> Obs. is the observation number. It runs from 1 to 10. >> X is the set of values for an independent variable being used to predict the dependent variable. Y is the set of values for the dependent variable being predicted by the regression. >> >> Y-hat is the set of predicted values found by multiplying X by the coefficient for B₁ and then adding the value for B₂. This is what the regression line predicts for Y for a given value of X. >>e is the set of residuals for the regression. It is the difference between Y and Y-hat. >> e² is the residuals squared. That simple. Investigate the table of data and familiarize yourself with the equations used to calculate the regression predictions. Then start entering different values for B₁ and B₂ in the "Your Model" table. You'll notice things change when you do this. "Sum of Error" adds up the values of column F in the data table. "SSE" adds up the values in column G in the data table, and is otherwise known as the "Sum of Squares Error". Below this is the SSX or "Sum of Squares for X" which you will need to calculate the S.E. of the Estimate, or "Standard Error of the Estimate" below. And in the last row, you have to calculate the S.E. of B₁ or the "Standard Error of the Slope". Sxy cov(x,y) var (x) B₁ = 53/2= = SZ Ba =ỳ - B Se (S. E. of the Estimate) : SB, (S.E.of B₁) = √SSX SSE n-2 You need to calculate values for each of the tan cells in the spreadsheet. For B₁ and 3₂ you will need to write your own formulas which reference the data for X and Y in the data table. For SSX, remember that the SSX is the numerator of the variance of X, which you can find by multiplying the variance by n-1. For S.E. of the Estimate and the S.E. of B₁ you will again need to write your own formula which uses the SSE, SSX, and the count of observations.
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