Ahandbook lists the density of lead as 11.3 g/ml. several groups of students are attempting to determine the density of a lead weight by various methods. calculate the average density measured by each group, and the percentage error in each average. measured densities (g/ml) group 1 group 2 group 3 trial 1 12.7 11.5 10.9 trial 2 11.2 11.4 11.3 trial 3 10.3 11.4 11.1