Cholesterol levels The National Health and Nutrition Examination Survey NHANES measured the serum HDL cholesterol levels in a large number of women Following is a sample of 40 HDL levels in milligrams per deciliter that are based on the results of that survey They have been sorted into numerical order 28 29 29 29 31 32 34 36 36 36 41 44 45 47 48 50 51 53 55 56 57 58 61 64 65 71 71 72 72 75 76 77 77 78 79 79 80 80 83 85 Part 0 4 Part 1 of 4 a Find the first and third quartiles of these data The first quartile of these data is The third quartile of these data is