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David Coleman
David Coleman
David Coleman
is an applied statistician with Alcoa Technical Center in Alcoa Center, PA.
Articles by David Coleman
Statistics in Analytical Chemistry: Part 19—Internal Standards
Thursday, December 01, 2005
The previous several articles have dealt with calibrationstudy design and calibration-diagnostic procedures.
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Statistics in Analytical Chemistry: Part 18—Calibration Example 6 (Concluded)
Thursday, September 01, 2005
In the previous article (American Laboratory Aug 2005), borate data were presented. No single model was found to be adequate.
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Statistics in Analytical Chemistry: Part 17—Calibration Example 6
Monday, August 01, 2005
This installment will present the sixth and last in this series of calibration examples.
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Statistics in Analytical Chemistry: Part 16—Calibration Example 5 (Concluded)
Sunday, May 01, 2005
In the previous article (American Laboratory, Feb 2005), calibration data were diagnosed for a study involving phosphate.
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Statistics in Analytical Chemistry: Part 15—Calibration Example 5
Tuesday, February 01, 2005
This real-world example of calibration diagnostics involves the ion-chromatographic behavior of phosphoric acid; phosphate is the actual analyte form that is measured by the instrument.
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Statistics in Analytical Chemistry: Part 14—Calibration Example 4
Friday, December 17, 2004
This fourth real-world example of calibration diagnostics comes from the same study as did Part 13 (American Laboratory, Sept 2004).
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Statistics in Analytical Chemistry: Part 13—Calibration Example 3
Friday, September 17, 2004
This month’s installment is the third in a series of real-world examples of calibration diagnostics.
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Statistics in Analytical Chemistry: Part 12—Calibration Example 2
Friday, July 16, 2004
This month’s installment is the second in a series of real-world examples of calibration diagnostics.
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Statistics in Analytical Chemistry: Part 11—Calibration Example
Friday, May 14, 2004
This article is the first in a series of real-world calibration analyses.
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Statistics in Analytical Chemistry: Part 10—Calibration Diagnostics (concluded)
Monday, March 01, 2004
This month's article will conclude the three-part series explaining calibration diagnostics.
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Statistics in Analytical Chemistry: Part 9—Calibration Diagnostics (continued)
Monday, February 02, 2004
The previous article (American Laboratory, Nov 2003) introduced the subject of calibration diagnostics.
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Statistics in Analytical Chemistry: Part 8—Calibration Diagnostics
Friday, November 21, 2003
The past seven articles have provided the fundamentals of calibration, including a protocol for designing a calibration study.
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Statistics in Analytical Chemistry: Part 7—A Review
Monday, September 01, 2003
With the publication of the previous installment (American Laboratory, July 2003), this series of articles has arrived at a logical spot for reviewing what has been presented to date.
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Statistics in Analytical Chemistry: Part 6—Calibration design
Friday, July 18, 2003
In the last installment in this series, it was suggested that a rule-of-thumb for calibration designs was five-by-five (i.e., five replicates of each of five concentrations), for a total of 25 data ...
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Statistics in Analytical Chemistry: Part 5—Calibration: Calibration design
Monday, June 02, 2003
With many things in life, the quality and usefulness of the outcome depends in large measure on the care with which the event is planned.
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