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Benford’s Steps using ACL
Step 1: Review the data Transaction Number Transaction Date Employee Number Transaction Amount 10347 1/02/2010 00444 $1,041.48 10348 00450 $ 10349 1/03/2010 00451 $18,629.05 10350 1/04/2010 00447 $6,586.75 10351 1/06/2010 $1,835.49 10352 1/10/2010 00455 $34,296.23 10353 $9,263.47 Has to be real world transactions, and not assigned transactions. 9,150 records of banking data
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Benford’s Steps using ACL
Step 2: Run the first digit test on Transaction Amount
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Benford’s Steps using ACL
Step 3: Run the second digit test on Transaction Amount anamolies identified…34, and 18.
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Benford’s Steps using ACL
Step 4: Isolate only those transactions beginning with “18” Transaction Number Transaction Date Employee Number Transaction Amount 10347 1/02/2010 00445 $1,843.17 10348 $1,827.34 10349 1/03/2010 00444 10350 1/04/2010 00447 10351 1/06/2010 $1,899.24 10352 1/10/2010 00455 $1,822.04 10353 00451 $183.98
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Benford’s Steps using ACL
Step 5: Use the “CLASSIFY” command to review transactions beginning with “18” Note that is repeated 69 times. Double click on to see all the transactions.
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Benford’s Steps using ACL
Step 6: Use the “CLASSIFY” command to review transactions beginning with “18” Transaction Amount Count Percent of Count Percent of Field $1,824.85 1 0.36% 0.23% $1,825.26 $1,827.21 $1,827.34 69 24.56% 15.62% $1,827.57 $1,832.50 $1,833.22 Note that is repeated 69 times. Double click on to see all the transactions. Percent of total count Percent of total amount
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Benford’s Steps using ACL
Step 7: Isolate transactions of $1,827.34 Transaction Number Transaction Date Employee Number Transaction Amount 10472 01/23/2010 00445 $1,827.34 10525 02/05/2010 00444 10602 02/14/2010 10721 02/19/2010 00449 11148 03/17/2010 11205 03/20/2010 00451 11206 03/25/2010
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Benford’s Steps using ACL
Step 8: Use the “CLASSIFY” command to review employee numbers associated with $1,827.34 00444 has the largest number of transaction – 19.
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Benford’s Steps using ACL
Step 9: Review table. Note that and have the majority of the transactions. Employee Number Count Percent of Count 00444 19 27.54% 00445 13 18.84% 00447 6 8.7% 00449 7 10.14% 00450 12 17.39% 00451
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