Message-ID: <37B6CE29-451F-4319-9C7F-450190154920@auckland.ac.nz>
Date: 2009-02-09T03:48:59Z
From: Rolf Turner
Subject: question about mean
In-Reply-To: <1BDAE2969943D540934EE8B4EF68F95FB22C042B51@EXNSW-MBX03.nexus.csiro.au>
On 9/02/2009, at 4:40 PM, Bill.Venables at csiro.au wrote:
> Store your 'matrix' as a data frame.
Surely it's a data frame already, since ``school'' is character or
factor,
and ``value'' is (must be?) numeric.
People have this unfortunate predilection to refer to data frames as
matrices, and this messes them, and everybody else, up.
cheers,
Rolf
<snip>
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