Edward Dreyer wrote:
A colleague of mine - not a subscriber to this helpful list - asked me if
it is possible for the standard deviation
to be larger than the mean. If so, under what conditions?
Of course - for example, if you analyse mean-corrected data...
It can even happen with data
Well, yes. the mean and standard deviation are not 'linked' for data with a
Normal distribution.
Dale Glaser asked:
Well, what about the standard normal distribution: N(0,1)?
The mean is 0, the standard deviation, 1.
If you add the restriction that the data not be less than 0, and allow
Of course the SD can be larger than the mean. If this were not so we
would not have the standard normal...
If the variable can take negative values, the mean may be close to zero,
or even negative - while the SD has to be positive.
If the variable can not take negative values, it is still
A colleague of mine - not a subscriber to this helpful list - asked me if
it is possible for the standard deviation
to be larger than the mean. If so, under what conditions?
At first blush I do not think so - but then I believe I have seen
some research results in which standard
Title: RE: Mean and Standard Deviation
Edward Dreyer writes:
A colleague of mine - not a subscriber to this helpful
list - asked me if it is possible for the standard deviation
to be larger than the mean. If so, under what conditions?
At first blush I do not think so - but then I
At 04:32 PM 10/12/01 -0500, you wrote:
A colleague of mine - not a subscriber to this helpful list - asked me if
it is possible for the standard deviation
to be larger than the mean. If so, under what conditions?
what about z scores??? mean = 0 and sd = 1
At first blush I do not think so
In article [EMAIL PROTECTED], Edward
Dreyer [EMAIL PROTECTED] wrote:
A colleague of mine - not a subscriber to this helpful list - asked me if
it is possible for the standard deviation
to be larger than the mean. If so, under what conditions?
Easily. Any highly skewed distribution will
Title: RE: Mean and Standard Deviation
Well, what
about the standard normal distribution: N(0,1)?
Dale N. Glaser, Ph.D.
Pacific Science
Engineering Group
6310 Greenwich
Drive; Suite 200
San Diego, CA
92122
Phone: (858)
535-1661 Fax: (858) 535-1665
http://www.pacific-science.com
