22 Feb
2010
22 Feb
'10
3:52 p.m.
From: Henry Baker <hbaker1@pipeline.com> To: math-fun <math-fun@mailman.xmission.com> Sent: Mon, February 22, 2010 11:28:13 AM Subject: [math-fun] Moving averages and net present values I was hacking a spreadsheet today & wanted to compute a moving average. I wasn't terribly particular about which moving average, but didn't find any moving averages in the list of functions that the spreadsheet program (OpenOffice Calc) offered. ________________________________ In OpenOffice 3.1, I put =SIN(0.1*ROW()) in A1:A200. Then I put =AVERAGE(A1:A11) in B6, and copied it to B7:B195. I made a chart, and got two sinusoids of period about 63, one ranging from -1.0 to 1.0, the other from -0.95 to 0.95. It looks like a moving average. -- Gene