The heights (in inches) and weights (in pounds) of nine randomly selected thirteen-year old girls are listed below.
Heights (inches)	59.4	61.2	62.1	64.7	60.1	58.3	64.6	63.7	66.1
Weights (pounds)	87	94	93	119	96	90	123	98	139
a. Find the coefficient of variation in heights.
b. Find the coefficient of variation in weights.
c. Compare the variation in heights to the variation in weights of thirteen-year-old girls.