List an accepted value for the density of a substance X taken from a textbook. Show the results found by two groups of students, doing 3 trials each, and list them. Determine the average density for each group. Elicited which group produced the most accurate results, and define accuracy. Calculate the range of densities for each group's trials. Range for group A was 6 units and the range for group B was 2 units. Determine that group B had the more precise results, but not the most accurate. Determination of error and percent error will be shown tomorrow.