Presentation Profile
PART 1: Understanding Test Method Precision and Bias
Currently Scheduled: 10/15/2024 - 8:00 AM - 8:40 AM
Room: Daffodil
Main Author
Alex Lau - Baytek International
Abstract:
Two or more test results obtained using the same test method for the same property of a specific sample by the same or different laboratory usually will be numerically different from each other due to common cause (random) variation encountered under the normal and correct execution of the test method. Therefore, test methods generally express an expected precision (a more appropriate term is imprecision) of results under the Precision and Bias section in the form of expected (dis)agreement between the aforementioned test results obtained under specific conditions. This presentation will provide an overview of test method precision and bias concepts, standardized metrics for (dis)agreement under different testing conditions, and how these metrics are determined.
