Re: Software

2000-11-30 Thread MJ Ray

"Ken" [EMAIL PROTECTED] writes:

 Of course you'll get what you pay for.

Nonsense.  http://www.visualstats.org/ http://www.r-project.org/


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Re: FAVOUR - Marking Scripts Statistically!

2000-10-29 Thread MJ Ray

[EMAIL PROTECTED] writes:
 I expected this to be a fairly common problem and hoped that a
 standard "formula" would already exist for it. As you quite correctly
 show, there are a huge number of possible scores given 10 grades (I
 thought of working this out but I think the factorials get too high for
 this time of night (01:50 GMT here in the UK).

This is, indeed, a fairly common problem.  I think there are two
approaches you can take to it: the first is to decide that you as a
research student are too far away from the grade auditing system to
have a significant input *or even effect* on it, mark according to
whatever broken scheme you are given and hope "it all comes out in the
wash", that the combination of several monumental errors and
"adjustment" after auditing will cancel each other out and give
something approaching an accurate mark.

The second, which you are starting off on, is to decide that you
cannot mark assignments in such an unethical fashion.  In this case,
you can either push for the scheme to be changed by whoever set it, or
unlaterally "redraft" the scheme and hope that the original author is
too overworked/uncaring to notice/care.

Either way, keep notes and remember your experiences when you come to
draw up your own mark schemes and systems.  I think I favour setting
general principles and giving the marker significant discretion in
adjusting the scheme to make a fair and reasonable system.  It's not
usually enough of a weighting in the degree to lose sleep over, unless
it happens for everything.

Finally, I feel obliged to say that these are my personal views and do
not necessarily reflect the opinion or policy of my University,
department or centre, as I can almost sense the knives being drawn as
I type.

MJR


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Re: 120 subjects on 120 occassion: a model ?

2000-10-13 Thread MJ Ray

"Gaj Vidmar" [EMAIL PROTECTED] writes:
 there seems to be no word from professional statisticians yet, so here's an
 addenum.

This message was posted in many places, so presumably we will get a
summary of responses if we care?

My own suggestion (mangled by a bad emailer) was to use vector time
series methods, but this could lead to a fairly large computation
probelm without extra information.  I wasn't able to recommend a very
good specialist reference off the top of my head, though.

MJR


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Re: Minitab Release 12. 60 Copies

2000-10-12 Thread MJ Ray

[EMAIL PROTECTED] (dennis roberts) writes:
 i know this is picky ... but, i say this is correct

Unfortunately, I believe the courts disagree with you.  Intuitively
"unfair" software licences are common-place and it will not change
until people realise that they are not buying the *software* but
paying an inflated price for an agreement to *use* it.  The worst
thing, IMO, is that if it breaks, you can't fix it, even if you know
how.

So, when will educational institutions wise up and use Free Software?

MJR (IASNAL)


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