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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Averaging
From: Chuck Taylor
Date: 2004 Oct 23, 10:56 -0700
From: Chuck Taylor
Date: 2004 Oct 23, 10:56 -0700
--- Jim Thompsonwrote: > 4. Average time by adding up the minutes and seconds > and dividing by the > number of sights, then adding that average to the > whole hour. > 5. Average altitude by adding up the minutes and > seconds and dividing by the > number of sights, then adding that average to the > whole degrees. When I teach this, I find that students have less trouble if they first convert all altitudes to minutes of arc, and all times to seconds of time, and then do the averaging. Then when they are done, convert back. A programmable calculator makes it easier. Chuck Taylor 47d 55' N 122d 11' W __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com