6. The partial MegaStat output below is regression analysis of the relationship between annual payroll and number of wins in a season for 28 teams in professional sports. The purpose of the analysis is to predict the number of wins when given an annual payroll in $millions. Although technically not a sample, the baseball data below will be treated as a convenience sample of all major league professional sports.

Wins	Payroll($mil)
85	26.914	Regression Analysis
80	36.609
71	27.23	r2
94	34.568	Adjusted r2
76	15.718	r
85	36.548	Std. Error
84	39.803	28	observations
69	22.949	1	Predictor variable
71	27.285	Wins	dependent variable
88	40.405
68	35.565	ANOVA table
82	31.461	Source	SS	df	MS	F
86	35.605	Regression			361.0159
95	45.748	Residual	3,626.98
104	38.131	Total	3,988.00
84	38.303
73	42.851
67	8.829	Regression output
64	18.197	variables	coefficients	std. error	t	p-value	95% upper
85	28.855	intercept	68.8291
81	37.833	payroll	0.3979	0.2473			0.9063
94	14.881
59	38.35
97	26.812
75	24.241
87	22.615
61	25.557
103	34.568

How many degrees of freedom for Residual (Error)?

Multiple Choice

1

2

26

27

28