This function checks the MAD agains the confomity criteria proposed by Nigrini (2012).
MAD.conformity(MAD = NULL, digits.used = c("First Digit",
"Second Digit", "First-Two Digits", "First-Three Digits"))
The mean absolute deviation, as computed in the function benford
How many digits used in the analysis.
A list with the MAD, digits.used and the conformity level.
Nigrini, M. J. (2012). Benford's Law: Application for Forensic Accounting, Auditing and Fraud Detection. Wiley and Sons: New Jersey.