Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN: 9781285686691
Author: Crouch
Publisher: Cengage
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Transcribed Image Text:(sum/n-1)
Standard
deviation
(Square
root of
variance)
Example of standard deviation calculation for the three 5 ml trials.
Sample ID 5 ml pipetted water sample
Measured
Deviation
Trial 1
Trial 2
Trial 3
Average
Sum of
squares
Variance
Standard
deviation
mass
6000
5400
3500
4967
1033
433
-1467
Deviation
squared
1067089
187489
2152089
3406667
1703333
1305
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