Statistical Tests for Evaluating Conformity to Benford's Law

Several specialized statistical tests and support functions for determining if numerical data could conform to Benford's law.


News

changes from version 1.1.2 to version 1.2.0 (August 4 2015)

  • new test!
    • jointdigit.benftest

changes from version 1.1.1 to version 1.1.2 (June 29 2015)

  • updated documentation
    • new maintainer email
    • formulas in edist.benftest and usq.benftest fixed (Thanks: S. van der Meer)
  • tweaked for improved speed
    • jpsq.benftest
    • usq.benftest

changes from version 1.1.0 to version 1.1.1 (November 04 2013)

  • meandigit.benftest
    • Added asymptotic distribution
    • "asymptotic" new default "pvalmethod"
  • Spell checked :D
    • News
    • Documentation

changes from version 1.0.2 to version 1.1.0 (October 10 2013)

  • added new functions (see documentation for details and usage)
    • signifd.analysis
    • simulateH0
  • updated documentation
    • signifd.analysis
    • simulateH0
    • functions relying on the former

changes from version 1.0.1 to version 1.0.2 (August 20 2013)

  • updated documentation
    • equations now included
    • references now follow CRAN recommendations
    • references updated
  • fixed meandigit.benftest
    • is one-sided test, p-value calculation was wrong
  • removed pdf-manual from tarball
    • waste of space according to U.Ligges

changes from version 1.0.0 to version 1.0.1 (June 05 2013)

  • fixed memory leak associated with NULL-Distribution simulations

changes from version 0.5 to version 1.0 (May 14 2013)

  • changed names of tests to make them more consistent with naming in base package: new name | old name

    -chisq.benftest | chi_square_benford argument: first_digits | argument: digits -ks.benftest | K_S_benford argument: first_digits | argument: digits -mdist.benftest | Chebyshev_dist_benford argument: first_digits | argument: digits -edist.benftest | Euclidean_dist_benford argument: first_digits | argument: digits -usq.benftest | Freedman_Watson_Usquare_benford argument: first_digits | argument: digits -meandigit.benftest | J_S_avg_dev_benford argument: first_digits | argument: digits -jpsq.benftest | J_stat_squ_benford argument: first_digits | argument: digits -signifd | leading_digits argument: number | argument: digits -signifd.seq | sequence_leading argument: number | argument: digits

  • removed ability to choose correlation type "kendall" and "spearman" for the jpsq.benftest (old: J_stat_squ_benford) (alleviates some confusion as to what the J_P^2 statistic is, usage of Pearson correlation is most powerful anyways)

  • data name is now correctly printed by the S3 object for all tests.

  • meandigit.benftest should have been a two sided test. p-value calculation now reflects this.

  • simulation of NULL-hypothesis distribution is now accomplished by c code faster by a very large factor. different for each test Compare the following times on a i5 Pentium laptop for the chi square test ##old##

    system.time(compute_chisquare_H0_R(n=1000,pvalsims=10000)) user system elapsed 207.98 0.06 210.23 ##new## system.time(compute_chisquare_H0(n=1000,pvalsims=10000)) user system elapsed 0.37 0.00 0.39

Reference manual

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install.packages("BenfordTests")

1.2.0 by Dieter William Joenssen, 4 years ago


https://cran.r-project.org/package=BenfordTests, https://www.researchgate.net/profile/Dieter_Joenssen


Browse source code at https://github.com/cran/BenfordTests


Authors: Dieter William Joenssen [aut, cre, cph] , Thomas Muellerleile [ctb]


Documentation:   PDF Manual  


Task views: Empirical Finance


GPL-3 license


Depends on grDevices, graphics, stats


See at CRAN