As part of an experiment to determine the density of a new plastic developed in her laboratory, Sara Ann Dippity measures the volume of a solid sample. Her four trials yield volumes of 12.37 cm³, 12.41 cm³, 12.39 cm³, and 12.38 cm³. Measurements of other scientists in the lab give an average volume of 12.49 cm³. Which of the following statements represents the best analysis of the data? A)Sara's results have low precision and high accuracy. B)Sara's results have high precision and high accuracy. C)Sara's results have greater precision than accuracy. D)Sara's results have greater accuracy than precision. E)Sara has been using a faulty instrument to measure the volume.

Question

Quizplus · Accepted Answer

Sara's measurements have a small range of values (0.04 cm³) which indicates high precision. However, the average value of her measurements deviates from the accepted value of 12.49 cm³, indicating low accuracy. Therefore, Sara's results have greater precision than accuracy.

As Part of an Experiment to Determine the Density of a New