Week 4: Factors Influencing Census Result (Errors etc)

ERRORS IN DEMOGRAPHIC DATA

 
 
Despite the care taken to ensure the quality of the data collected by enumeration and registration, it will some time give obvious indications of errors in basic information. Usually errors in censuses and vital statistic registration (VSR) are of two types:
1.       Coverage.
2.       Content.
    A third type of error is sampling error which is introduced when sampling is used.
 
1.    ERROR OF COVERAGE:
                                        It is the common observation that a conduct or survey some households are missed and not counted, others may be counted two times. In VSR (vital statistic registration) there are cases which skip in registration (birth, date, marriages) these situation errors in demographic data offer must be made to cover all units and events of all observations which fall in our domain.
 
2.    ERRORS IN CONTENT:
                                      The term error of content refers to instance where the characteristic of a person counted in a census enumeration or in registration or in a survey are in correctly reported, recorded and tabulated or sometime they are completely missing.
                                      Besides from the errors due to carelessness or mistakes in judgment in a census or VSR, errors of coverage or content or both can arise at any step from initiation of an original record publication to the final tabulation or final record. The five principles are:
                                 i.            The respondent.
                               ii.            The recorder/ enumerator /investigator.
                              iii.            The coding process.
                             iv.            The editing process.
                               v.            Compiling and printing process.

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