Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.mixmin.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed2a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.082 X-Spam-Evidence: '*H*': 0.84; '*S*': 0.00; 'mrab': 0.05; 'versions,': 0.07; 'cc:addr:python-list': 0.11; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'googling': 0.16; 'models,': 0.16; 'wrote:': 0.18; 'bit': 0.19; 'seems': 0.21; '(in': 0.22; 'cc:addr:python.org': 0.22; 'cc:2**0': 0.24; 'least': 0.26; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; "doesn't": 0.30; 'message-id:@mail.gmail.com': 0.30; '(which': 0.31; "d'aprano": 0.31; 'sep': 0.31; 'steven': 0.31; 'probably': 0.32; 'could': 0.34; 'received:google.com': 0.35; 'there': 0.35; 'ram': 0.36; 'shows': 0.36; 'two': 0.37; 'minimum': 0.38; 'called': 0.40; 'most': 0.60; 'matter': 0.61; 'more': 0.64; 'between': 0.67; 'useful.': 0.68; 'price': 0.69; 'average.': 0.84; 'median': 0.84; 'points,': 0.84; 'presumably': 0.84; 'to:none': 0.92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type:content-transfer-encoding; bh=ZhAWrbNTNrj0nU5PEQpO/3pEkq/hENf4vnnzFmfZTiQ=; b=DYSq3a6Ly9t456tWAk0YRvrpc7EoLI0gd7TL9qOAEf+umrYiA4Mk8K69VadKQtYznX BpprDTabxg6lSkkt1dafZsrKmg3ZhZS2INR0NWxu97lAEo6fxrD1I2FlDAaf31GXHqdB W3BFJcuyGrVTkOSiURb3nm7EYOKRuAg6Ws2tce63PNCuCsfeAWm4WLdwEIVR4aM+l3qh pDsB+xik412SyA5CqklH3y2aZuvZv1pElwPlNO3S6gZPqE48scgDDZKk5K5FZe5m2fuQ ZNCHFt/YEBRQlrxvc7jPgK5/lq6/18czoKCJJsOjuwEoAlyOX5VAO+S4BJj56Uw7hrYo blCA== MIME-Version: 1.0 X-Received: by 10.42.78.195 with SMTP id o3mr11909478ick.4.1411868261344; Sat, 27 Sep 2014 18:37:41 -0700 (PDT) In-Reply-To: <542760e9$0$13012$c3e8da3$5496439d@news.astraweb.com> References: <542760e9$0$13012$c3e8da3$5496439d@news.astraweb.com> Date: Sun, 28 Sep 2014 11:37:41 +1000 Subject: Re: Storage Cost Calculation From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 29 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1411868264 news.xs4all.nl 2837 [2001:888:2000:d::a6]:55674 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:78427 On Sun, Sep 28, 2014 at 11:14 AM, Steven D'Aprano wrote: > MRAB wrote: > >> In 1981 the BBC Micro was released. There were 2 versions, model A with >> 16K and model B was 32K. The price difference was =C2=A3100, so that's = =C2=A3100 >> for 16K of RAM. > > That doesn't follow. The model A might have been =C2=A31 (in which case y= ou could > get 16K for =C2=A31) or it might have been =C2=A310000. All your calculat= ion shows is > that model B was =C2=A3100 more expensive. > > There are three more-or-less equally valid statistics you could have used= to > calculate the price of RAM: the average, minimum, or maximum. With only t= wo > data points, it doesn't matter whether you use the mean or median to > calculate the average. Of the three, the minimum is probably the most > useful. The RAM was presumably the only difference between the two models, so as long as Model A cost at least =C2=A3100 (which seems likely; a bit of quick Googling suggests that it may have been of the order of =C2=A3400), a =C2=A3100 difference can plausibly be called the price of the RAM. ChrisA