The height and weight of all 74,859 students attending to the primary and junior-highschools in the Tokushima prefecture were gathered for the purpose of data collection for thecommittee for prevention of life style related disease. The measurement was performedbetween April and June, 2000 according to the methods recommended by the Japanesegovernment. The histograms of height of each sex and age group showed clear normaldistribution. On the other hands, the histograms of weight and Body Mass Index (BMI)showed the deviation towards the heavier part. We draw histograms of all males and allfemales, and found the existence of two peaks in both of the histograms. We recognizedthat the middle depressed part, which means the less person of that height, indicates thepeak of growth. The most bottoms were 139cm-140cm in female and 152cm-153cm in male
