Publication:
An analysis of DoD Inspector General's statistical sampling plan for Navy repairable item procurements

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Authors
Chase, Thomas D.
Subjects
NA
Advisors
McMasters, Alan W.
Fremgen, James M.
Date of Issue
1994-06
Date
June 1994
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A recent audit by the Department of Defense Inspector General (DODIG) of Navy inventory control points found a high value of purchase requests for repairable items that the auditors labeled as unnecessary or excessive. The dollar figures reported were based on the auditors' use of stratified sampling. This thesis examined the auditors' use of stratified sampling by attempting to replicate the auditors' process of stratifying and sampling. The author then attempted to verf the auditors' claimed confidence level and precision of the final result. This study questions the chosen sample size and sample stratification. In addition, this thesis found that the auditors' actual precision was not as tight as stated in the DODIG audit report. This was caused by the auditors' emphasis on the very high dollar value strata which had only a few purchase requests rather than on the stratum with the largest number of purchase requests. It was this latter stratum which had the highest projected number and total dollar value of excesses.
Type
Thesis
Description
Series/Report No
Department
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
74 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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