Skip to main content

Table 3 Estimated effect, regression coefficient, and ANOVA of the Plackett-Burman matrix of different components for calcium chelation by demineralization process

From: Factors influencing DNA extraction from human skeletal remains: bone characteristic and total demineralization process

Variables Sum of squares df Coefficient Mean squares p value
Model 150,601.81 5   30,120.36 0.0007
Temperature 2043.63 1 13.05 2043.63 0.3002
Concentration 142,179.87 1 108.85 142,179.87 < 0.0001
pH 270.75 1 − 4.75 270.75 0.6960
Volume 5967.48 1 − 22.3 5967.48 0.0975
Time 140.08 1 3.416667 140.08 0.7781
Curvature 5449.85 1   5449.85 0.1105
Lack of fit 11,431.48 6   23,815.5799 0.0050
Coefficient of determination (R2) = 0.93
  1. df degree of freedom