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A Control Chart Based on Cumulative Scores
Author(s) -
Munford A. G.
Publication year - 1980
Publication title -
journal of the royal statistical society: series c (applied statistics)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.205
H-Index - 72
eISSN - 1467-9876
pISSN - 0035-9254
DOI - 10.2307/2346899
Subject(s) - statistics , control chart , mathematics , shewhart individuals control chart , econometrics , computer science , ewma chart , programming language , process (computing)
S ummary Process control schemes using a simple scoring system are presented for controlling the mean of a normal distribution in the one and two sided case. The average run lengths of the schemes are simpler to compute than those of cumulative sum schemes, and for small deviations in the process mean the schemes are considerably more sensitive than Shewhart schemes. Some examples and comparisons are given.