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An Extension of the Reliability Concept to Vector Variables

Author(s):
Kristof, Walter
Publication Year:
1972
Report Number:
RB-72-07
Source:
ETS Research Bulletin
Document Type:
Report
Page Count:
16
Subject/Key Words:
National Science Foundation (NSF), Mathematical Applications, Measurement Techniques, Test Interpretation, Test Reliability

Abstract

The coefficient of precision type of reliability orginally defined for scalar variables is generalized to vector variables and named vector reliability. The new coefficient ranges from zero to one. Additional basic properties of vector reliability are derived. Vector information is defined as a simple function of vector reliability. A number of properties of vector information are demonstrated in order to justify its use as a measure of information contained in a vector variable. Two applications are appended by way of illustration. (Author) (16pp.)

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