1970 HUNGARIAN CENSUS OF POPULATION Information on the data collection and processing (1977)

I. THE COMPREHENSIVE REWIEV OF THE DATA COLLECTION AND PROCESSING - 11. The control of the reliability of the census

11 Social-occupational group of the employed and collective farmers This arrangement - similarly in Table 9 - shows a similar picture to the quality of individual occupation and employment: mental labour shows a certain unjustified surplus in the census. This can be seen in the percentage number, still it does not assume such proportions as to interfere with the analysis: the proportion of mental labour is 27, 91 percent as opposed to the 26, 62 percent determined by the post-enumeration control. Because of less detailed grouping (forming only three groups) the gross and net errors are naturally lower than in the more detailed former breakdown (8. 71 as well as 2, 58 percent). Dwelling criteria % Dwelling size Table 10 and the so-called "diagonal" table showing the comparison of the census and the post-enumeration control contain the data of the number of rooms (broken down into half rooms too). Even at first sight this shows higher dispersion as opposed to the identical declarations on the diagonal than in the case of personal data. This is shown by the proportion numbers of gross and net errors too, though the latter is considerably lower than the former here too. There seems to have been uncertainty mainly in the interpretation of half rooms. The differences between percentage distributions and similarly the data according to the signs of the net errors show greater shift between dwellings with one and one and a half rooms. Similarly there is a lack of data of dwellings with two and a half rooms too, but this is cancelled interestingly enough not by dwellings with two but with three rooms. However, the data of the percentage distribution of dwelling size have proved useful even by this criterion. 109