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![](/common/images/spacer.gif) Lognormal Distributions for Body Weight as a Function of Age for Males and Females in the United States, 1976-1980
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![](/common/images/spacer.gif) Based on results reported from the NHANES II Survey (the National Health and Nutrition Examination Survey II) for people living in the United Staztes during 1976-1980, we use exploratory data analysis, probability plots, and the method of maximum likelihood to fit Lognormal distributions to percentiles of body weight for males and femails as a function of age from 6 months through 74 years. The results are immediately useful in probabilistic (and deterministic) risk assessments.
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