抄録
This is the third study on the seasonal and irregular fluctuation of the building starts in Japan. By table 1, 2, 3 we can know the significance of the seasonal fluctuation pattern and the scale of seasonal and irregular factors. As each series has a trend, the value of trend at Jan. 1964 is selected for the comparison of the absolute amount of each series. For the F-test of meaningful seasonality, the F value of Table 1 is compared with F^10_120 (0.01)=2.47 (instead of F^11_168 (0.01) and the F value of Table 2 and 3 is compared with F^11_84 (0.01)=2.42 or F^11_84 (0.05)=1.91 The seasonal fluctuation patterns of building starts by major group are shown in Fig. 1-1〜Fig. 1-8. Only the significant seasonal patterns of the series in Table 2 and 3 are shown in Fig. 2-1-1〜Fig. 3-3. Series related with dwellings have high F values and each series has an unique seasonal pattern. Building for Agriculture, Forestry and Fishery and Educational Buildings also have high F values. Some of the other series have weak seasonality and some does not have at all, as shown in tables and figures. In order to know the details of the seasonal fluctuation of building starts, we must classify them into many small groups. However, small group usually has strong irregular fluctuation and this gives a difficulty for finding the meaningful seasonalyity patterns.
