Vinodkumar, Jacob; Dr.Bhasi, M; Dr.Gopikakumari, R(Cochin University of Science And Technology, February , 2013)
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Abstract:
Measurement is the act or the result of a quantitative comparison between a
given quantity and a quantity of the same kind chosen as a unit. It is generally
agreed that all measurements contain errors. In a measuring system where both a
measuring instrument and a human being taking the measurement using a preset
process, the measurement error could be due to the instrument, the process or the
human being involved. The first part of the study is devoted to understanding the
human errors in measurement. For that, selected person related and selected work
related factors that could affect measurement errors have been identified. Though
these are well known, the exact extent of the error and the extent of effect of
different factors on human errors in measurement are less reported.
Characterization of human errors in measurement is done by conducting an
experimental study using different subjects, where the factors were changed one at a
time and the measurements made by them recorded.
From the pre‐experiment survey research studies, it is observed that the
respondents could not give the correct answers to questions related to the correct
values [extent] of human related measurement errors. This confirmed the fears
expressed regarding lack of knowledge about the extent of human related
measurement errors among professionals associated with quality. But in postexperiment
phase of survey study, it is observed that the answers regarding the
extent of human related measurement errors has improved significantly since the
answer choices were provided based on the experimental study. It is hoped that this
work will help users of measurement in practice to better understand and manage
the phenomena of human related errors in measurement.
Description:
School of Engineering, Cochin University of Science and Technology