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

Table 10

. INDEX-NUMBERS OF THE RELIABILITY OF THE DATA OF ECONOMIC ACTIVITY OF THE CENSUS Activity Percentage dist. Difference between percentages Identically grouped items Gross Net Index of inconsistency Activity Census P.C. Survey Difference between percentages Identically grouped items errors Index of inconsistency Activity Census P.C. Survey Difference between percentages in the percentage of the census returns Index of inconsistency Active wageearners: permanent temporary 46,28 46,40 - 0,12 94,47 2,14 2, 65 5,31 - 0, 25 0,099 0, 51 56,45 110, 57 - 23,48 1, 130 Inactive wageearners: on maternity 1. retired, 1, 53 1, 48 + 0, 05 86,40 24,43 + 2, 77 0, 248 annuitant 12, 54 12, 55 - 0,01 94, 61 10,94 - 0,15 0,125 Dependents 37, 51 36,92 + 0,59 94,44 9, 53 + 1, 59 0,153 Total 100,00 100, 00 - 94, 93 10,15 a

yl,28 b/o,147 / a/ Sum of the absolute numbers of net errors, compared with the total nuinber of persons. - b/ Weighted arithmetical mean. Branc of national economy The survey of data has proved very good in view of the branches of economy. The difference between the data of percentage distribution of the nine main branches fluctuates around 0,1 percent at most. The gross error of the whole distribution is 3,6 percent, the net error íb 0,48 percent. This is due to the correctness of declaration and beyond this to the definite profiles of employers, companies and the awareness of this. These circumstances as well as the numbering of companies may contribute to the correctness of coding during the future censuses. From among the individual rubrics only the percentage error of the very small "Other" rubric without further particulars is high. Table 7 contains fuller informational material in view of the importance of the criterion. 105