ANOVA Model
IQ ~ Add
means	129	127	109	106	119	111	117.5	118	118	110.667	105	103.5	111	115.5	101.333	102	95.5	96.8	98.333	90	101	108.333	95	98.5	102	85.5	93.5	81	92.667	95	101.5	89	75	93	91	79	90.5	96	91	102	98	89.5	88	82

ANOVA Statistics
	Df	Sum Sq	Mean Sq	F value	Pr(>F)
Add	44	892392.033	20281.637	187.676	0
Residuals	44	4754.967	108.067

Must Include Intercept to use Tukey Test

Levenes Test for Homogeneity of Variance
	Df	F value	Pr(>F)
Group	43	1.821	0.025
	44