ASTM-D6250 2009

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D6250-98(2009) Standard Practice for Derivation of Decision Point and Confidence Limit for Statistical Testing of Mean Concentration in Waste Management Decisions

Published By	Publication Date	Number of Pages
ASTM	2009	14

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Categories: 13.020.10 - Environmental management, ASTM

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Description

ASTM D6250-98-Reapproved2009

Withdrawn Standard: Standard Practice for Derivation of Decision Point and Confidence Limit for Statistical Testing of Mean Concentration in Waste Management Decisions (Withdrawn 2018)

ASTM D6250

Scope

1.1 This practice covers a logical basis for the derivation of a decision point and confidence limit when mean concentration is used for making environmental waste management decisions. The determination of a decision point or confidence limit should be made in the context of the defined problem. The main focus of this practice is on the determination of a decision point.

1.2 In environmental management decisions, the derivation of a decision point allows a direct comparison of a sample mean against this decision point, where similar decisions can be made by comparing a confidence limit against a concentration limit (for example, a regulatory limit, which will be used as a surrogate term for any concentration limit throughout this practice). This practice focuses on making environmental decisions using this kind of statistical comparison. Other factors, such as any qualitative information that may be important to decision-making, are not considered here.

1.3 A decision point is a concentration level statistically derived based on a specified decision error and is used in a decision rule for the purpose of choosing between alternative actions.

1.4 This practice derives the decision point and confidence limit in the framework of a statistical test of hypothesis under three different presumptions. The relationship between decision point and confidence limit is also described.

1.5 Determination of decision points and confidence limits for statistics other than mean concentration is not covered in this practice. This practice also assumes that the data are normally distributed. When this assumption does not apply, a transformation to normalize the data may be needed. If other statistical tests such as nonparametric methods are used in the decision rule, this practice may not apply. When there are many data points below the detection limit, the methods in this practice may not apply.

Keywords

confidence limit; data quality objectives; decision error; decision point; false negative; false positive; hypothesis; mean concentration; presumption; waste management; Confidence interval/limit/coefficient; Data quality objectives (DQO); Decision analysis; False positive/negative; Hypothesis; Mean concentration; Presumption; Waste managment activities

ICS Code

ICS Number Code 13.020.10 (Environmental management)

DOI: 10.1520/D6250-98R09

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Significance and Use Overview of Decision Point Determination Decision Rule in Waste Management Decisions
3	FIG. 1
4	Test of Hypothesis
5	Determination of A Decision Point
6	FIG. 2
7	FIG. 3
8	FIG. 4
9	Control of Decision Errors FIG. 5
10	Keywords X1. MATHEMATICAL DERIVATION OF A DECISION POINT FROM STATISTICAL TEST OF HYPOTHESIS FOR MEAN CONCENTRATION X1.1 X1.2
11	X1.3 False Negative Decision Error X1.4 Equivalency Between Decision Point Approach and Test of Hypothesis Approach TABLE X1.1
12	X1.5 Decision Point Derivation Under Second Presumption
13	X1.6 Decision Point Derivation Under Third Presumption TABLE X1.2

Additional information

Standard Title	D6250-98(2009) Standard Practice for Derivation of Decision Point and Confidence Limit for Statistical Testing of Mean Concentration in Waste Management Decisions
Published Code	ASTM
Publication Date	2009
Pages Count	14
ICS Codes	13.020.10 - Environmental management