Abstract
In Japan, there is a constant local dispsition in the average ratio of living spaces in dwelling units. For determination of this charactor, this report analize the frame of reference indicated in several statistics and researches, in the use of Speaman's coefficient of rank correlation, and pick out as a index the living space of owned house. The distribution chart of average ratio of living spaces in owned holse, by the data of 1960 census, shows similar charactors to the chart in 1950. Probably, such a local disposition is influenced by many factors, for instance cultural traditions, customary techniques, natural features, climate, topographical factors, industrial characters, etc. There are several representative groups concerned in "Tatami" size-classfication, after correcting the difference of net-size.
