Abstract
This paper deals with the correspondence between the distributisn of number of dwelling rooms and the distribution of number of household members. After that, the distribution of number of surplus rooms per household is analyzed by time trend and tenure of dwelling. The conclusions are as follows. 1. The distribution of number of the dwellings by number of rooms may be closely resembled to the Normal distribution, and the distribution of number of households by number of household members may closely resembled to the Gibrat distribution, in prefectural and national level. One of the housing problems is caused by the discrepancy between both distributions, and the other one is caused by the results that people occupy the dwellings which have uncorrespondense number of rooms to size of his household. 2. In the owned house group, the total number of dwelling rooms exceeds the total number of dwellers. Nevertheless, about 10% of households live in the less room house than his family size. This reason is explained by presences of the people who occupy the dwelling, having more rooms than his family size, who account for about 50% of the owned house group. 3. In rented house group, one of housing problems may be caused by the facts that numerous small houses have been supplied, and most of these houses have only two or three rooms. So, many families are constrained to live in the less room house against their family size. They account for about 30% of their group. On the other hand, about 20% of rented house group live in the more room house than their family size. 4. Distribution of number of surplus room per houshold, which is defined as number of rooms minus number of household members in each dwelling, is proved to be closely applyed to the Normal distribution.
