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Comedy as a Gateway
Page 36
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2
2
2
2
1
1
2
1
2
1
2
1
2
2
2
1
1
1
)
1
(
)
1
(
1
1
2
)
(
)
(
02
01
V
N
X
V
N
X
N
N
k
N
N
MSE
k
N
MSE
k
N
S
B
B
where
N
= sample size (here, the number of days in the time series, 213)
k
= the number of model parameters
MSE
= the residual mean-square error for the regression equation
V
= the variance of the predictor
X = the mean of the predictor
The t-statistic obtained is evaluated using (N
1
+ N
2
- 2k) degrees of freedom.
Additional computational information needed for statistical tests reported in text (see Table 2 for slope and intercept estimates):
Equation
Model 1 MSE Model 2 MSE
No-Comedy
0.015
0.012
Leno/Letterman
0.030
0.028
Daily Show
0.213
0.212
Predictor
Mean ( X )
Variance (V)
Day (Linear)
107.00
3798.50
Day
2
(Quadratic)
3780.67
11487930.17
Iowa
0.64
0.23
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