What is meant by the 7 basic tools of quality?
The 7 basic tools of quality are various methods compiled by Ishikawa Kaoru in 1943 for quality assurance in companies. The 7 quality tools are: flow chart, check sheet, histogram, control chart, pareto chart, scatter diagram, cause-and-effect diagram
How did the 7 basic tools of quality come about?
The 7 Quality Tools were developed by Kaoru Ishikawa in 1943 to contribute to problem solving and quality assurance through systematic methods.
What are the 7 basic tools of quality?
Flow Chart A flow chart is a graphical representation of processes and procedures. It uses symbols and arrows to represent the sequence of operations and can be used to visualize and analyze complex processes.
Check Sheet A check sheet used to collect information about faults that occur. The number of different types of errors is noted.
Histogram A histogram is a column chart used to show the distribution of data. It shows the frequency of data within different classes of data plotted on the horizontal axis. The frequency of data within each class is shown on the vertical axis.
Control Chart A control chart is used to evaluate data to assess process stability of processes. When data falls outside of control limits, it may indicate a process failure or a change in the process.
Pareto chart A Pareto chart is a bar chart used to visualize the relative frequency of problems in a process. For example, the data from the error collection chart can be visually represented. In a Pareto chart, problems or causes are presented in descending order by frequency.
Scatter Diagram A scatter diagram is used to visualize the relationship between two variables. A positive relationship means that the values of both variables increase together, while a negative relationship means that the values of one variable increase when the other variable decreases. An independent relationship means that there is no discernible relationship between the two variables.
Cause-And-Effect-Diagram A cause-and-effect-diagram (fishbone diagram) represents the relationship between one or more causes and the effect. The cause-effect diagram consists of a horizontal line and several diagonal lines. The horizontal line represents the effect, while the diagonal lines, which look like the bones of a fish, each represent a category of causes.