抄録
The figure shows the relationships between the rates of change in households and population for Japanese cities during the period of 1960-65. The number of households increased during the period, whereas the size of households showed a reverse tendency. Relationships of the change rates of households with those of population can be classifies as follows: A: Increase in both households and population (57.8% of all cities). B: Increase in households but decrease in population (37.9%). C: Decrease in both households and population (4.3%). Correlation between the change rates of households and population is very high, as the correlation coefficient r is 0.988, and the relationship is expressed by the regression line Y=0.82X-8.32, where X=10.15 in case of Y=0. It shows that the population increased in the cities where the increase rates of households were 10.15% or more for the five years from 1960 to 1965 and vice versa.
