In every April, students are measured their heights and weights at school. The government collects those data and publishes them each year. Here are the 2015 data on the distribution of 7 year-old boys height. The biggest cluster is 123cm/4'0" (7.62%).
Figure: Distribution of 7 Year-old Boys Height in Japan, 2015
cm | feet | % |
103 | 3'4" | 0.03 |
104 | 3'5" | 0.01 |
105 | 3'5" | 0 |
106 | 3'6" | 0.02 |
107 | 3'6" | 0.05 |
108 | 3'6" | 0.13 |
109 | 3'7" | 0.13 |
110 | 3'7" | 0.43 |
111 | 3'8" | 0.65 |
112 | 3'8" | 0.94 |
113 | 3'8" | 1.59 |
114 | 3'9" | 2.08 |
115 | 3'9" | 2.60 |
116 | 3'10" | 3.76 |
117 | 3'10" | 4.33 |
118 | 3'10" | 5.67 |
119 | 3'11" | 6.26 |
120 | 3'11" | 7.51 |
121 | 4'0" | 7.55 |
122 | 4'0" | 7.46 |
123 | 4'0" | 7.62 |
124 | 4'1" | 7.36 |
125 | 4'1" | 6.48 |
126 | 4'2" | 5.61 |
127 | 4'2" | 5.11 |
128 | 4'2" | 4.34 |
129 | 4'3" | 3.32 |
130 | 4'3" | 2.63 |
131 | 4'3" | 1.86 |
132 | 4'4" | 1.45 |
133 | 4'4" | 1.13 |
134 | 4'5" | 0.75 |
135 | 4'5" | 0.41 |
136 | 4'5" | 0.32 |
137 | 4'6" | 0.17 |
138 | 4'6" | 0.11 |
139 | 4'7" | 0.07 |
140 | 4'7" | 0.04 |
141 | 4'7" | 0.01 |
142 | 4'8" | 0.01 |
143 | 4'8" | 0 |
144 | 4'9" | 0 |
145 | 4'9" | 0.01 |
Source is Ministry of Education, Culture, Sports, Science and Technology.
www.mext.go.jp/b_menu/toukei/chousa05/hoken/kekka/k_detail/1365985.htm
www.e-stat.go.jp/SG1/estat/Xlsdl.do?sinfid=000031399258
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