All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel

profiletutor4helpyou
 (Not rated)
 (Not rated)
Chat

All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel.


Use the output below to answer the following questions.


A baseball analyst would like to develop a model to predict the number of wins during the 2011 baseball season. The analyst collected several variables: Wins, ERA, Runs Scored, Hits Allowed, Walks Allowed, Errors and Saves from 30 professional baseball teams. The data is shows below.


Regression Statistics

Multiple R

0.9504

Observations

30


ANOVA

 

df

SS

MS

F

Significance F

Regression

4

2611.92

652.98

58.3123

.000000000259

Residual

25

279.95

11.198

 

 

Total

29

2891.87

 

 

 



Variable

Coefficient

Standard Error

T value

P value

Lower 95%

Upper 95%

Intercept

74.7771

16.7626

4.4610

.00002

40.2540

109.3003

ERA

-12.3206

3.2066

-3.8423

.0007

-18.9247

-5.7166

Runs Scored

.08433

.0079

10.6414

.00000009

.0680

.1007

Hits Allowed

.0107

.0163

-0.6563

.5176

-0.0441

0.0228

Saves

.2731

.1203

2.2703

.0321

.0254

.5208



1)

Fill in the tables with the missing values? (You should have 13 different values you need to find)


 

 

2)

What is the correlation of determination?


 

 

3)

What is the adjusted r2?


 

 

 

4)

What is the standard error of the estimated regression line?

 

 

5)

What is the estimated regression equation?


 

 

6)

Use the estimated regression equation to predict Wins when ERA 5.42, Runs Score is 938, Hits Allowed is 1596 and Saves are 30.


 

7)

Calculate the residual for the observed described in number 6), if the original Wins for that observation were 72.

 

 

 

 

8)

What is the hypothesis scenario?


 

 

9)

Is there evidence of a significant relationship between the OVERALL Wins andthe independent variables? Use alpha = .05.(State the p-value and the conclusion)


 

 

10)

Which of the independent variables are significant predictors of Wins? Which ones do you want to include in your model? Use alpha = .05 (Hint: run a t test on each slope)


 

 


  • 11 years ago
All calculations should be done in Word using Equation Editor and all charts and graphs should be done in Excel
NOT RATED

Purchase the answer to view it

blurred-text
  • attachment
    solution.docx