SIX 2011 automobiles. Cylinders, Engine Size, and Fuel Economy for Six Cars 5), the fuel economy (miles per gallon [mpg], city driving), and the country of Vehicle Cylinders Engine Size City Country of mpg Manufacture Cadillac CTS 6 3 18 USA Ford Fusion Hybrid 4 2.5 41 USA Ford Taurus 6 3.5 18 USA Honda Civic 4 1.8 25 Japan Rolls Royce 12 6.7 11 Toyota Camry Hybrid 4 2.4 31 UK Japan The coefficient of variation enables analysts to compare the variability of two data sets that are measured on different scales. The coefficient of variation (CV) itself does not have a unit of measure. Larger values of CV indicate greater variability or spread. The coefficient of variation is given as the following. standard deviation CV = mean 100% Use this measure of variability to complete the following. (a) Calculate the coefficient of variation for the following variables: cylinders, engine size, and city mpg. (Round your answers to two decimal places.) cylinders X % 47.14 engine size 48.33 -% city mpg 10.17 * % (b) According to the coefficient of variation, which variable has the greatest spread? cylinders engine size city mpg According to the coefficient of variation, which variable has the least variability? cylinders engine size