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

I. THE COMPREHENSIVE REWIEV OF THE DATA COLLECTION AND PROCESSING - 8. The electronic data processing of the census of 1970

The content of the programming Number Extent in words Date of the order Date of the completion The content of the programming of the programmes of the programming and testing operations Tabulation one by one • one by one Coding 11 6-7 000 3. VIII.1971 10.IX. 1971. Table design 1 31 872 3. VIII.1971 10.IX.1971 Editing of tables 1 32 384 3. VIII.1971 10.IX.1971 Filling in of parameters to magnetic discs 1 4 100 3. VIII. 1971 10.IX.1971 Printing and control of parameters 3. Vm.l971 10. IX. 1971 Tables showing data of outskirts' areas preparation 5 5x5-6 000 30. XI. 1971 30. XII. 1971 interpreting 2 2x3- 400 30. XI. 1971 30. XII. 1971tabulating 2 12 500 30. XI. 1971 30.XII. 1971 g/ THE CONTROLLING PROCEDURES OF THE CENSUS OF 1970 AND THE FREQUENCY OF ERRORS Coding, revision of codes As it has been pointed out earlier, the basic (75 per cent) questionaries had to be coded by the census-takers. The census-takers were capable of performing this simple task in a reliable manner. Consequently, the proportion of the errors remained in the material was negligible. The census-takers had also to qualify each person according to family status as related to the head of the household. It happened frequently enough that the census-taker did not stand upon the rules specified in details in the instructions, attained during the training, but his decisions were influenced by the local habits. All this aspects had to be taken into consideration in the programme of the correction. Consequently, a special attention had to be paid to the question, whether the person named was rightly qualified as the head of the household, since this notion had been treated as a basis criterion. We shall revert to this notion in the following, when the control of the basis criteria will be dealt with. The coding centrally performed has been supervised in the manner described. As opposed to the traditional procedure, the revision took place by representative methods and comprised about 30, 20, or 15 per cent of the material coded. The percentage of errors as calculated by the superrevisor formed the basis on which the necessity of further operations depended: the recoding (with an error-limit of 4 per cent or above), the correction of the serial errors (1-3 per cent) or the omission of further corrections (under 1 per cent. ) The categories mentioned above have been observed and registered by census-districts. Of 41 000 census districts; 78