Results

Linear Regression: Dummies

Model Summary - Happiness
Model		R		R²		Adjusted R²		RMSE
M₀		0.246		0.061		0.027		1.929
M₁		0.536		0.288		0.205		1.744

Note. M₀ includes Puppy_love
Note. M₁ includes Puppy_love, Low_control, High_control

ANOVA
Model				Sum of Squares		df		Mean Square		F		p
M₀		Regression		6.734		1		6.734		1.809		0.189
		Residual		104.232		28		3.723
		Total		110.967		29
M₁		Regression		31.920		3		10.640		3.500		0.030
		Residual		79.047		26		3.040
		Total		110.967		29

Note. M₀ includes Puppy_love
Note. M₁ includes Puppy_love, Low_control, High_control

Coefficients
Model				Unstandardized		Standard Error		Standardizedᵃ		t		p
M₀		(Intercept)		3.657		0.634				5.764		< .001
		Puppy_love		0.260		0.193		0.246		1.345		0.189
M₁		(Intercept)		1.789		0.867				2.063		0.049
		Puppy_love		0.416		0.187		0.395		2.227		0.035
		Low_control (1)		1.786		0.849				2.102		0.045
		High_control (1)		2.225		0.803				2.771		0.010

ᵃ Standardized coefficients can only be computed for continuous predictors.

Linear Regression

Model Summary - Happiness
Model		R		R²		Adjusted R²		RMSE
M₀		0.390		0.152		0.089		1.867
M₁		0.536		0.288		0.205		1.744

Note. M₀ includes Dose
Note. M₁ includes Puppy_love, Dose

ANOVA
Model				Sum of Squares		df		Mean Square		F		p
M₀		Regression		16.844		2		8.422		2.416		0.108
		Residual		94.123		27		3.486
		Total		110.967		29
M₁		Regression		31.920		3		10.640		3.500		0.030
		Residual		79.047		26		3.040
		Total		110.967		29

Note. M₀ includes Dose
Note. M₁ includes Puppy_love, Dose

Coefficients
Model				Unstandardized		Standard Error		Standardizedᵃ		t		p
M₀		(Intercept)		3.222		0.622				5.177		< .001
		Dose (15 mins)		1.653		0.907				1.822		0.080
		Dose (30 mins)		1.624		0.810				2.006		0.055
M₁		(Intercept)		1.789		0.867				2.063		0.049
		Puppy_love		0.416		0.187		0.395		2.227		0.035
		Dose (15 mins)		1.786		0.849				2.102		0.045
		Dose (30 mins)		2.225		0.803				2.771		0.010

ᵃ Standardized coefficients can only be computed for continuous predictors.