A control chart is a statistical tool used to monitor process variation. A control chart is a graphical representation of data over time. It is used to detect and correct deviations from the desired condition.What Is a Control Chart?The Control Chart is one of the Seven Basic Quality Tools. A control chart is a graphic display
Stratification is a technique used to divide a population into homogeneous subsets. Studying defect types for multiple products might not give you a good idea about the cause. For example, you may want to study the types of defects produced by a production line making multiple types of products. You could stratify your data so that
A check sheet can be used for collecting both quantitative and qualitative data. When used to collect qualitative data, a check sheet collects data in the form of checkmarks. It indicates how many times a particular value has occurred. That way, it lets you see trends in the data easily.What is a Check Sheet?The check
Cause and effect diagrams are commonly used to illustrate causal relationships. Causal relationships are relationships between two or more factors. When we talk about causality, we mean that something happens because another thing happened first.What Is a Cause and Effect Diagram?A cause and effect diagram is a graphical representation of the relationships between causes and
A Scatter diagram is one of the Seven Basic Quality Tools. It plots two sets of observations against each other; the horizontal axis represents one set of observations (independent variable) while the vertical axis represents the second set of observations (dependent variable). Scatter diagrams allow you to examine relationships between variables visually. Both of these variables
Italian economist Vilfredo Pareto originally developed the Pareto principle. He noticed that 80% of the land was owned by 20% of the population in Italy. In the context of quality management, this chart was popularized by Joseph Juran. According to Joseph Juran, this principle also applies to defects. He stated that 80% of the defects are caused
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