Do not trust in computers [Bioanalytics]

posted by Helmut Homepage – Vienna, Austria, 2009-01-21 14:00 (6364 d 10:18 ago) – Posting: # 3091
Views: 32,629

Dear DLabes!

❝ flame warin' a little bit with you.


Yeah, I like that!

❝ By the way, M$-Excel is an extraordinary software in this way.


Definitely. If one has to use it for any reasons, he/she should follow the Ohlbe's suggestions.
BTW, even in M$-Excel it's possible to get the correct answer (if STDEV() is avoided):
    |       A       |       B
    +---------------+-----------------------------
  1 | 90000001      | =(A1-A$4)^2
  2 | 90000002      | =(A2-A$4)^2
  3 | 90000003      | =(A3-A$4)^2
  4 | =MEAN(A1:A3)  | =SUM(B1:B3)
  5 | =STDEV(A1:A3) | =SQRT(1/(COUNT(A1:A3)-1)*B4)

gives
    |       A       |       B
    +---------------+-----------------------------
  1 | 90000001      | 1
  2 | 90000002      | 0
  3 | 90000003      | 1
  4 | 90000002      | 2
  5 | 0             | 1


There are even better speadsheets around. OpenOffice Calc returns 1 if STDEV() is used, even with the oldest version I have on one of my machines, namely v2.0 from 2005.

Dif-tor heh smusma 🖖🏼 Довге життя Україна! [image]
Helmut Schütz
[image]

The quality of responses received is directly proportional to the quality of the question asked. 🚮
Science Quotes

Complete thread:

UA Flag
Activity
 Admin contact
23,655 posts in 4,993 threads, 1,571 registered users;
152 visitors (0 registered, 152 guests [including 33 identified bots]).
Forum time: 01:18 CEST (Europe/Vienna)

The great tragedy of Science – the slaying
of a beautiful hypothesis by an ugly fact.    Thomas Henry Huxley

The Bioequivalence and Bioavailability Forum is hosted by
BEBAC Ing. Helmut Schütz
HTML5