Ayurveda is a traditional medical system commonly used in India. Listed below are the lead concentrations (in ƒg/g) measured in different Ayurveda medicines (manufactured in the United States). (Data from “Lead, Mercury, and Arsenic in U.S. and Indian Manufactured Ayurvedic Medicines Sold via the Internet,” by Saper et al., Journal of the American Medical Association, Vol. 300, No. 8.)

3.0     6.5     6.0     5.5     20.5     7.5     12.0     20.5     11.5     17.5

Range and Standard Deviation. Exercises each provide a set of numbers. In each case, find the range and standard deviation.