Premium
Statistical Process Control Charts for Measuring and Monitoring Temporal Consistency of Ratings
Author(s) -
Omar M. Hafidz
Publication year - 2010
Publication title -
journal of educational measurement
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.917
H-Index - 47
eISSN - 1745-3984
pISSN - 0022-0655
DOI - 10.1111/j.1745-3984.2009.00097.x
Subject(s) - control chart , statistical process control , consistency (knowledge bases) , computer science , shewhart individuals control chart , process (computing) , chart , statistics , strengths and weaknesses , \bar x and r chart , quality (philosophy) , control (management) , reliability engineering , data mining , control limits , mathematics , artificial intelligence , psychology , engineering , ewma chart , social psychology , philosophy , epistemology , operating system
Methods of statistical process control were briefly investigated in the field of educational measurement as early as 1999. However, only the use of a cumulative sum chart was explored. In this article other methods of statistical quality control are introduced and explored. In particular, methods in the form of Shewhart mean and standard deviation charts are introduced as techniques for ensuring quality in a measurement process for rating performance items in operational assessments. Several strengths and weaknesses of the procedures are explored with illustrative real and simulated rating data. Further research directions are also suggested .