# fonte: http://www.math.mun.ca/~sneddon/st3520/dietbibd.txt
# age funciona como o bloco
# fator de interesse é fat
fat	age	lipids
extremely low	[15,24]	0.73
extremely low	[25,34]	0.86
extremely low	[35,44]	NA
extremely low	[45,54]	1.4
extremely low	[55,64]	NA
extremely low	[65,74]	0.83
fairly low	[15,24]	0.67
fairly low	[25,34]	NA
fairly low	[35,44]	0.81
fairly low	[45,54]	NA
fairly low	[55,64]	1.41
fairly low	[65,74]	1.04
moderately low	[15,24]	NA
moderately low	[25,34]	0.21
moderately low	[35,44]	0.26
moderately low	[45,54]	0.75
moderately low	[55,64]	0.78
moderately low	[65,74]	NA