or b. d. 2 dfs+df₂s Sp V(df₁ + df₂) S₂ 1 N Im Sxo ysm . + ( US= ) 2 ms,

Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter7: Components Of Optical Instruments
Section: Chapter Questions
Problem 7.20QAP
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A standard addition calibration curve was generated by plotting measured absorbances at 280nm versus the concentration of standard added.

Select the equation that should be used to calculate the standard error in the concentration of an unknown determined using this calibration curve. 

or
b.
d.
df₁s² + df₂s²2
Sp V(df₁+df₂)
S₂
1
Im|||N
Sxo
+ (YSm )²
ms,
Transcribed Image Text:or b. d. df₁s² + df₂s²2 Sp V(df₁+df₂) S₂ 1 Im|||N Sxo + (YSm )² ms,
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