Quality control tools

thumb|255px|A simple flowchart representing a process for dealing with a non-functioning Light fixture|lamp

thumb|In this histogram, height is divided into bins of equal width (5 feet)

causal diagrams created by Kaoru Ishikawa

plot using the dispersal of scattered dots to show the relationship between variables

type of chart

chart type

systematic technique for identification of potential failure modes in a system and their causes and effects

statistical process control tool

method of problem solving used for identifying the original causes of faults or problems

AI whose processes can be understood by humans

designation given to a fixed set of graphical techniques identified as being very helpful in troubleshooting issues related to quality

In process improvement, SIPOC or suppliers, inputs, process, outputs and customers (sometimes in the reversed order: COPIS) is a tool that summarizes the inputs and outputs of one or more business processes in table form, with each of the words forming a column in the table used in the analysis. It is used to define a business process from beginning to end before work on process improvement begins.

form (document) used to collect data in real time at the location where the data is generated

Japanese 7-step process used in strategic planning in which strategic goals are communicated throughout the company and then put into action

statistical methods to improve the quality of manufactured goods

structured problem improvement approach

graph that displays observed data in a time sequencer

In statistical quality control, the CUSUM (or cumulative sum control chart) is a sequential analysis technique developed by E. S. Page of the University of Cambridge. It is typically used for monitoring change detection. CUSUM was announced in Biometrika, in 1954, a few years after the publication of Wald's sequential probability ratio test (SPRT).

critical design review

uses statistical sampling to determine whether to accept or reject a production lot of material