Download eBook for Free

FormatFile SizeNotes
PDF file 2.5 MB

Use Adobe Acrobat Reader version 10 or higher for the best experience.


Purchase Print Copy

 FormatList Price Price
Add to Cart Paperback47 pages $15.00 $12.00 20% Web Discount

A proposal of an improved procedure for direct use in predicting the demand for spare parts. The study examines a specific aspect of the supply problem, that is, the estimating of spare-parts demand rates at times when data from operational experience are still relatively sparse. While the Air Force has been relying in such instances on a priori estimates made by the initial provisioning conference, shifting to a computed demand rate only at a later time when experience was judged to be "extensive," the study urges a gradual and systematic transition from the one to the other. Even "limited" demand experience is thus used. At any point of time, a priori estimates and observed demands are weighted by expected accuracy. For carrying out this procedure, the study shows how to prepare and use a weighted average of the two sources of data. Graphs, formulae, and a step-by-step procedure for making demand-rate predictions are included.

This report is part of the RAND Corporation Research memorandum series. The Research Memorandum was a product of the RAND Corporation from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.

This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit

The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.