The standard deviations are used to plot in the S chart. The mean values are plotted in the X-bar chart. This type of chart is used to control the mean value of the variables. On the basis what characteristic of the product a quality chart monitors, it is divided into the following types. The main job of a quality control chart is to monitor the specific feature of the product so that quality can be maintained. These charts depend on the type of quality information that is to be controlled.Ī quality control chart also illustrates whether the quality strays from one or more standards. Different types of charts such are drawn for the purpose of quality control as X-bar charts and S charts. If defects are systematically occurring in the product then it is clearly displayed on the chart. A chart that portrays whether sampled products or processes are meeting the standards or not. The procedure should strictly control the quality of products beginning from the raw material inspection product design and development stage and even to the post-sales service. These standards have been adopted worldwide for a quality product. It postulates quality requirements for the design, development, production, and sales of quality products, e.g. ![]() Many manufacturing follows the ISO 9000 series of standards, the international standards established by the ISO. Many product handlers identify quality as a key factor that can distinguish their product from their competitors. This minimizes product and manufacturing defects and customer complaints. ![]() Product quality control empowers organizations to control the data related to product quality.
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