Sender: |
|
Subject: |
|
From: |
|
Date: |
Thu, 5 Dec 2002 08:33:17 -0500 |
Reply-To: |
|
Parts/Attachments: |
|
|
Hi,
I have to jump in here... having an engineer as a husband, I got the
whole lecture on 'resolution vs. accuracy' after he heard me tell a client
that the scale I use (Babyweigh) was 'accurate' to within .1 oz. What it
actually says on the scale is that the RESOLUTION is to within .1 oz (+/-
2 grams)... the ACCURACY, which is listed in the next column, is always
going to be a % of the weight of the baby you are weighing. In the case
of the Babyweigh, the accuracy is listed as +/- .034% of the weight for
babies between 0-12 lbs; and +/- .042% of the weight for babies 12-14 lbs.
He figured this out to be within about .3 oz for an 8 lb. baby.
The way he explained it to me was... the resolution simply means what
the scale reads. You can have a scale with a resolution of .0000001 oz
that can be less accurate than a scale with a resolution of .5 oz. The
way accuracy is calculated it is ALWAYS going to be a % of the weight (ie.
margin of error).
All that said, he still said that the Babyweigh IS a very accurate
scale... just not in the way most of us THINK it is!
Jeanne Cygnus, IBCLC
The Art of Breastfeeding
Mundelein, IL, USA
***********************************************
To temporarily stop your subscription: set lactnet nomail
To start it again: set lactnet mail (or digest)
To unsubscribe: unsubscribe lactnet
All commands go to [log in to unmask]
The LACTNET mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software together with L-Soft's LSMTP(TM)
mailer for lightning fast mail delivery. For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html
|
|
|