Talk:Kaai Yuki/@comment-202.158.87.122-20120427130047/@comment-5017500-20120712140954

The standard deviation is about 6cm. It means that about 2/3 of girls are in the range from 133.6cm - 6cm to 133.6cm + 6cm. So you can say 130cm is near the average. Don't worry, mother. :-)