Dataset: karate_board.dat Source: P.K. Smith, T. Niiler, and P.W. McCullough (2010). "Evaluating Makiwara Punching Board Performance," Journal of Asian Martial Arts, Vol 19, #2, pp. 34-45. Description: Results of experiments measuring deflection (mm) of makiwara boards of two types (stacked and tapered) and of four wood types (Cherry, Ash, Fir, and Oak). Unbalanced due to broken boards. Variables/Columns Treatment 8 Wood Type 16 /* 1=Cherry, 2=Ash, 3=Fir, 4=Oak */ Board Type 24 /* 1=Stacked, 2=Tapered */ Board (trt) id 26-32 Deflection (mm) 34-40