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4.1.1.3
(10-24-2006)
Minimum DIF Cutoff Score
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Each year, National Headquarters Examination establishes a National
SB/SE DIF cutoff score for returns added to the DIF inventory. Returns with
a DIF score higher than the minimum are added to the DIF inventory and may
be ordered for classification.
4.1.1.3.1
(10-24-2006)
DIF Cutoff Score
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The PSP will calculate the Area DIF cutoff score for each activity code,
giving consideration to the selection rate. This is the lowest DIF score necessary
to secure the number of returns required for audit. For example, if the return
plan shows 225 returns for an activity code and the selection rate is 70%,
and the inventory report is as shown below, the Area will need to order 321
returns (225/70%). The DIF Cutoff Score is 500. The number of returns with
DIF scores greater than 550 is 280, which is less than the number of returns
required, so the lowest DIF score on an ordered return will be in the range
of 500 to 550 and the DIF cutoff score is 500.
Example:
Inventory Report
4.1.1.3.2
(10-24-2006)
Use of DIF Cutoff Score for Return Orders
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The PSP Support Manager should monitor the inventory reports to ensure
that Area-wide return orders do not result in the delivery of returns that
are below the DIF cutoff score.
-
For a POD Supplemental Order, the PSP may order returns below the DIF
cutoff score provided the total ordered does not exceed 110% of the returns
above the cutoff score, i.e., not more than 10% of the returns ordered for
any POD should be below the DIF cutoff score.
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Every available means to supply workload above the cutoff score in each
activity code will be exhausted before a request is submitted to order returns
below the cutoff score. For example, for a POD, if the geographical Area permits,
select returns from excess workload of a contiguous POD within the Area.
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