Dataset: tooth_cement.csv Source: J.R. Holtan, G.P. Nystrom, P.S. Olin, J. Rudney and W.H. Douglas (1990). "Bond Strength of a Light-Cured and Two Auto-Cured Glass Ionomer Liners, Journal of Dentistry, Vol. 18, pp. 271-275 Description: Comparison of 3 glass ionomers on sheer bond strength: 1 = Vitrabond (light-cured) 2 = GC Lining Cement (auto-cured) 3 = Ketac-Bond (auto-cured) in 99 tooth sides (2 Trts/Tooth) in a Balanced Incompete Block Design Variables: tooth cement sbstrength