The following statistics on weekly wages have been collected from the LabCorp health care company for the years 2015 and 2016: Year 2015 Year 2016 Mean 360 500 Mode 365 450 Median 370 500 Variance 2025 8100 Range 123 200 a) [3 points] Calculate the coefficient of variation for year 2015 b) [3 points] Calculate the coefficient of variation for the year 2016 c) [2 points] In which year did the wages appear to be more dispersed? Explain