Testing the Reliability of 2011 Census – Albania Using Benford’s Law

  • Abstract:

    The main purpose of the study is to test the hypothesis whether the second digit of demographic data 2011 Census-Al obeys Benford’s law. We consider 2827 data divided into five groups. The source of official data is INSTAT.
    The results of this study include:
    1. The mean of second digit for all five groups of the data converge to Benford’s law, at the confidence level 95%.
    2. The data for group 1 obeys Benford’s law at the confidence level 95%.
    3. The data for group 2 obeys Benford’s law at the confidencde level 95%.
    4. The data for group 3 contradicts Benford’s law at the confidence level 99.5%.
    5. The data for group 4 obeys Benford’s law at the confidencde level 95%.
    6. The data for group 5 contradicts Benford’s law at the confidence level 95%.
    7. The data for groups 1,2,3,4,5 together contradict Benford’s law at the confidence 90%.
    Therefore, these 2827 official data obtained from 2011 Census-Al are suspectable for manipulation.