Yorgi:
There is a standard test for comparing variances from two independent
samples, and it is discussed in most intro stat texts. The test statistic
has an F-distribution, and degrees of freedom are what you would expect
for the sample variances.
Hope this helps,
David Cross
On Wed, 5 Apr 2000 [EMAIL PROTECTED] wrote:
> I am not experienced statistician but I have one simple question. I
> have 2 continuous variables from different populations. One has a mean
> of 50 one has a mean of 0.3. When I graph their distributions the
> first one (with 50 mean) appears to be less variable than the second
> (with mean of 0.3). It has a very gaussian appearance, whereas the
> other appears highly skewed on both tails. However, because the first
> has much larger magnitude, it has larger variance.
> My question is -can I somehow systematically compare the
> variability of two samples from different populations? Perhaps there
> is some sort of method fopr standardizing variances? I would like to
> do better than simply say "the graphs suggest that one variable is
> more/less variable than the other" which is what I am doing now.
> I thank you for your time,
> Sincerly,
> Yorgi V.
>
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
>
>
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