SOLUTION: A doctor randomly selects 40 of his patients and obtains the following frequency distribution diagram regarding their serum HDL cholesterol. Use the frequency distribution diagram

Question 1071195: A doctor randomly selects 40 of his patients and obtains the following frequency distribution diagram regarding their serum HDL cholesterol. Use the frequency distribution diagram on the right to approximate the mean and standard deviation for serum HDL
HDL Level Number of patients
30-39 6
40-49 8
50-59 8
60-69 18
-
X =
S=

Answer by slthorn(1) (Show Source): You can put this solution on YOUR website!

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