Table 2.

The mean flexural strength values, SDs, min and max values of each group.

Groups	Mean ± SD	Min	Max	Weibull Modulus	Weibull Characteristics
1% CuO	76.58±1.40	69.35	82.56	18.31	78.68
3% CuO	71.32±1.99	60.24	79.41	12.26	74.16
1% Fe2O3	74.91±1.37	68.11	81.26	18.88	76.90
3% Fe2O3	73.12±1.56	61.81	78.40	15.38	73.99
1% TiO2	84.99±1.66	79.12	93.35	16.53	87.52
3% TiO2	72.07±1.84	61.34	79.11	13.38	74.72
Control	74.20±1.43	67.79	79.90	17.33	76.35