Re: Do you want it?


Greg Heath wrote:
Reef Fish wrote:

I think Greg's attention span is good only for a few lines. So, I'll
snip all
except those few line:

I think the emphasis in a "sample variance" is that it is obtained from
a SAMPLE of data values. The criterion of estimation does not
alter the fact that they are all called "sample variance", as a short
for of "sample estimate of the population sigma under criterion #".

What modifications to above discussion result when the population
mean, M, is known and the unbiased estimate for the covariance
matrix is

S = Sum(Xi-M)(Xi-M)'/N ?

Hope this helps.

You should snip that line from your sig file. What you post seldom
helps
anyone. In this case, you're asking a question that is already
answered.

You S came from a SAMPLE didn't it? So, what's the relevance of
the unbiased estimate of the covariance in your question?

Greg

.