7, 6, 15, 11, 5, 9, 4, 10, 14, 1, 5, 9, 5, 12, 8, 2 a. Find the measures of center and the measures of variation for the data. Round your answers to the nearest hundredth, if necessary. b. A new student joins the class who watched 21 movies last month. Is 21 an outlier? How does including this value affect the measures of center and the measures of variation? Explain. Round your answers to the nearest hundredth, if necessary.