X-Received: by 10.224.218.2 with SMTP id ho2mr3513805qab.8.1355953934186; Wed, 19 Dec 2012 13:52:14 -0800 (PST) MIME-Version: 1.0 Received: by 10.49.71.169 with SMTP id w9mr1120862qeu.7.1355953934132; Wed, 19 Dec 2012 13:52:14 -0800 (PST) Path: news.ccsf.jp!news-haigo!news.tkn.funabashi.chiba.jp!tomockey.ddo.jp!eu.feeder.erje.net!feeder.erje.net!us.feeder.erje.net!feed.news.qwest.net!mpls-nntp-03.inet.qwest.net!news-out.readnews.com!transit3.readnews.com!209.85.216.88.MISMATCH!ee4no705031qab.0!news-out.google.com!k2ni865qap.0!nntp.google.com!ee4no705024qab.0!postnews.google.com!eo2g2000vbb.googlegroups.com!not-for-mail Newsgroups: japan.sci.math Date: Wed, 19 Dec 2012 13:52:14 -0800 (PST) Complaints-To: groups-abuse@google.com Injection-Info: eo2g2000vbb.googlegroups.com; posting-host=83.42.220.173; posting-account=MFEtbgoAAAALho2-zP1kIEzPmqlG9-z2 NNTP-Posting-Host: 83.42.220.173 User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11,gzip(gfe) Message-ID: Subject: A benefit match: a little essay on arithmetic means. From: Matifutbol Injection-Date: Wed, 19 Dec 2012 21:52:14 +0000 Content-Type: text/plain; charset=ISO-8859-1 Xref: news.ccsf.jp japan.sci.math:256 http://www.matifutbol.com/docs/units/benefit.html It's Christmas Day, and it's been held a benefit match on the Misunderstood Mathematicians. A player is sustituted, and the average age of the team rises 2 years. With this data, we work out an interesting reflection on arithmetic means and their variations as a function of the group members