Abstract
Our object in this paper is to make it clear that the distribution of places where children are playing is composed of two diferent distributions. In this study, we find that most of places where children are playing are included in the territories around their houses. And we try to show that the distribution of places where children are playing is composed of the distribution of distances from a child own house to playing-places in his territory around his house and of the distribution of distances from his house to playing-places in his friend's territory around his friend's house. The resolts in this study are as follows; (1) In cases that a child play alone or play with members of his each family, most of his playing-places are included in a circle area (a radius of 60 meters from his house). In cases that a child play with their friends, most of his playing-places are included in a cirele area (a radius of 60 meters from his house or from his friend's house). (2) The relation between distributions is as follow : Z=b_x×X+b_y×Y Z : The distribution of distances from child own house to playing-places X : The distribution of distances from child own house to playing-places in child own territory around his house Y : The distribution of distances from child own house to playing-places in friend's territory around friend's house b_x : A ratio of X b_y : A ratio of Y
