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Subject:
RMS & CI? <fwd>
From:
Johnnie Sutherland <[log in to unmask]>
Reply To:
Joseph McCollum <[log in to unmask]>
Date:
Fri, 22 Jan 1999 17:21:37 -0500
Content-Type:
TEXT/PLAIN
Parts/Attachments:
TEXT/PLAIN (16 lines) 
--- Begin Forwarded Message ---
Date: Fri, 22 Jan 1999 23:05:31 CST
From: Joseph McCollum <[log in to unmask]>
Subject: RMS & CI?
 
I was wondering how the factor 2.4477 * RMS to be a 95% confidence
interval for horizontal and vertical data is derived.
This is from the FGDC standards -- their source is
Greenwalt, C.R. and Schultz, M.E., Principles and Error Theory and
Cartographic Applications, ACIC Technical Report No. 96:  St. Louis, MO.
 
Aeronautical Chart and Information Center, U.S. Air Force.  89 pp.
 
Does anyone have this book, or know how the formula is derived?
--- End Forwarded Message ---

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