Question

In: Statistics and Probability

The value of a sports franchise is directly related to the amount of revenue that a...

The value of a sports franchise is directly related to the amount of revenue that a franchise can generate. The file here represents the value in 2013 (in $millions) and the annual revenue (in $millions) for the 30 Major League Baseball franchises. (Data extracted from www.forbes.com/mlb-valuations/list.) Suppose you want to develop a simple linear regression model to predict franchise value based on annual revenue generated. What are the values for (1) the proportion of variation in value of a sports franchise that is explained by annual revenue , (2) the sum of squares Y , (3) the sum of squares predicted , (4) the sum of squares error , (5) the intercept A , (6) the slope b , (7) the predicted value of a sports franchise (in $millions) that generates $300 millions of annual revenue , and (8) the standard error of estimate ?

Team Revenue Value
Baltimore 206 618
Boston 336 1312
Chicago White Sox 216 692
Cleveland 186 559
Detroit 238 643
Kansas City 169 457
Los Angeles Angels 239 718
Minnesota 214 578
New York Yankees 471 2300
Oakland 173 468
Seattle 215 644
Tampa Bay 167 451
Texas 239 764
Toronto 203 568
Arizona 195 584
Atlanta 225 629
Chicago Cubs 274 1000
Cincinnati 202 546
Colorado 199 537
Houston 196 626
Los Angeles Dodgers 245 1615
Miami 195 520
Milwaukee 201 562
New York Mets 232 811
Philadelphia 279 893
Pittsburgh 178 479
St. Louis 236 716
San Diego 189 600
San Francisco 262 786
Washington 225 631

Solutions

Expert Solution

(1) the proportion of variation in value of a sports franchise that is explained by annual revenue ,

0.822

(2) the sum of squares Y ,

42,96,009.3667

(3) the sum of squares predicted ,

35,30,836.8306

(4) the sum of squares error ,

7,65,172.5361

(5) the intercept A ,

-601.9291

(6) the slope b ,

5.9316

(7) the predicted value of a sports franchise (in $millions) that generates $300 millions of annual revenue ,

1,177.566

and (8) the standard error of estimate ?

165.311

The regression output is:

0.822
r   0.907
Std. Error   165.311
n   30
k   1
Dep. Var. Value
ANOVA table
Source SS   df   MS F p-value
Regression 35,30,836.8306 1   35,30,836.8306 129.20 5.29E-12
Residual 7,65,172.5361 28   27,327.5906
Total 42,96,009.3667 29  
Regression output confidence interval
variables coefficients std. error    t (df=28) p-value 95% lower 95% upper
Intercept -601.9291
Revenue 5.9316 0.5218 11.367 5.29E-12 4.8627 7.0006
Predicted values for: Value
95% Confidence Interval 95% Prediction Interval
Revenue Predicted lower upper lower upper Leverage
300 1,177.566 1,077.870 1,277.261 824.571 1,530.560 0.087

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