sion
of how they travel when air resistance is accounted for?
It's not that hard, with the help of modern computers. You just type
in the initial angle and velocity (the properties of air can be
considered fixed), and the computer plots the trajectory. Why have
them work out unrealistic
a lucky break that the t statistic
doesn't depend on sigma. After seeing the z test, students will
realize how lucky one is to have such a statistic, and will realize
that one shouldn't expect that to happen all the time. (Well, the
really good ones might realize all this.)
Radford Neal
ext)
I think we may take this as an admission by Mr. Ulrich that he is
incapable of advancing any sensible argument in favour of his
position. Certainly he's never made any sensible response to my
criticism. Given this comment (albeit directed to someone else),
I think I'll r
[EMAIL PROTECTED] (Radford Neal) wrote:
>[ snip, baseball game; etc. ]
>> In this context, all that matters is that there is a difference. As
>> explained in many previous posts by myself and others, it is NOT
>> appropriate in this context to do a significance
[EMAIL PROTECTED] (Radford Neal) wrote:
>[ snip, baseball game; etc. ]
>> In this context, all that matters is that there is a difference. As
>> explained in many previous posts by myself and others, it is NOT
>> appropriate in this context to do a significance
>On 12 Mar 2001, Radford Neal wrote:
>> Yes indeed. And the context in this case is the question of whether
>> or not the difference in performance provides an alternative
>> explanation for why the men were paid more (one supposes, no actual
>> salary data has bee
>Radford Neal wrote:
>>
>> In article <[EMAIL PROTECTED]>,
>> Recall that this baseball example was intended to clarify how one
>> should go about determining whether or not there is reason to think
>> that MIT discriminated against women faculty. From yo
u think that MIT should not pay faculty based on their
actual achievements, but rather on the basis of some estimate of their
ability, disregarding "random factors". That's an interesting
opinion, but would a policy of paying based on actual achievement (or
a noisy estimate of actual ac
ts can't happen together", this is
not an adequate definition if some non-null events have zero probability.
I think that independence is not something that can be explained in
ANY simple way. Multiple explanations and multiple examples are needed.
Radford Neal
my reasoning, I suggest you
explain the flaw.
Radford Neal
--
I think the statistical issue in this discussion can be boiled down to
a question of how to calculate standard errors for regression
coefficients.
What regression? We
lly
impede future research, since getting them invalidated is costly.
Patents may seem like a good idea in theory, but the practice has
become horrible.
Radford Neal
=
Instructions for joining and leaving this list and re
I think the statistical issue in this discussion can be boiled down to
a question of how to calculate standard errors for regression
coefficients.
What regression? Well, there isn't one, because there isn't any data,
but the discussions seems to presuppose the possibility of data that
for each f
In article <[EMAIL PROTECTED]>,
Jerry Dallal <[EMAIL PROTECTED]> wrote:
> We often have a group of individuals who are judged comparable in
> responsibilities and performance. In such cases, it *may* be
> appropriate to use permutation methods. The rationale would be:
> There is some variation
In article <0gmh6.222677$[EMAIL PROTECTED]>,
Neo Sunrider <[EMAIL PROTECTED]> wrote:
>If I want to test a hypothesis (t-test, z-score etc.) and the underlying
>distribution will under no circumstances aproach normal... (i.e. the results
>of the experiement will always be something like 100*10.5,
er
the observed effect is or is not causal.
>Similar to before, it should be possible to show either a
>1-tailed CI or a 50% range that lies *above* the range of
>trivial and artifactual results.
Computing a confidence interval does seem like a good idea if you're
worried
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