Seven Basic Tools of Quality Control
Check Sheet
aid the user
to record data in an firm systematically. can be applied in the auditing of quality assurance for reviwing
and to follow the steps in a particular process. Also, they help the user to
arrange the data for the utilization later
Histogram
describe a sense of the frequency
distribution of observed values of a variable.It is a type of bar chart that
visualizes both attribute and variable data of a product or process, also assists users to show the distribution of data and the amount of variation
within a process. It displays the different measures of central tendency. for those working
into the operation process
Pareto Analysis
is a
special type of histogram that can easily be apply to find and prioritize quality problems, conditions, or their causes of in the organization. it is a type of bar chart that shows the
relative importance of variables, prioritized in descending order from left to right side of the chart. The aim of Pareto chart is to figure out the different
kind of “nonconformity” from data figures, maintenance data, repair data, parts scrap rates, or other sources.
Fishbone Diagram
The cause and effect
diagram is a problem-solving tool that investigates and analizes systematically all the potential or real causes that result in a single effect. On
the other hand, it is an efficient tool that equips the organization's management to explore for the possible causes of a problem
Scatter Diagram
to draw the distribution of information
in two dimensions, which helps to detect and analyze a pattern relationships between two quality and compliance variables (as an independent variable
and a dependent variable), and understanding if there is a relationship between them, so what kind of the relationship is (Weak or strong and
positive or negative).
Flowchart
presents a diagrammatic picture that indicats a series of
symbols to describe the sequence of steps exist in an operation or process. On the other hand, a flowchart visualize a picture including the inputs,
activities, decision points, and outputs for using and understanding easily concerning the overall objective through process.
Control Chart
special form of “run chart that it
illustrates the amount and nature of variation in the process over time”. Also, it can draw and describe what has been happning in the process. Therefore, it
is very important to apply control chart, becaust it can observe and moniter process to study process that is in “statistical control” (No problem with
quality) accordant to the samplings or samplings are betwwen UCL and LCL
