=+11. An experiment was carried out to compare electrical resistivity for six different low-permeability concrete bridge deck mixtures. There were 26 measurements on concrete cylinders for each mixture;

these were obtained 28 days after casting. The entries in the accompanying ANOVA table are based on information in the article “In-Place Resistivity of Bridge Deck Concrete Mixtures” (ACI Materials J., 2009: 114–122). A partial ANOVA table for this data follows:

Source df Sum of Squares Mean Square F Mixture Error 13.929 Total 5664.415