The eighth title of the Quality Management System standard is defined as measurement, analysis and improvement. The fourth sub-section under this heading is about data analysis studies.

In terms of the enterprises that set up and apply the Quality Management System standard, it is not a good picture that the activities are inappropriate, that the costs do not fall, that negative quality control results are obtained, that customer complaints cannot be brought to the desired levels. Already the establishment of a Quality Management System is to prevent such negativities. However, if something goes wrong, the reasons for this should be well researched and analyzed.

In order to not deviate from the determined limits, to continuously improve the quality of the product or service and to keep the costs under control, first of all the problematic areas should be identified and corrective and preventive activities should be started. The best way to do this is to determine a method for using a number of statistical techniques.

Quality management system In order to carry out these studies within a certain systematic ISO 9001: 2015 data analysis procedure It is prepared. Data analysis studies are based on analyzing a lot of data in order to provide the basis for continuous improvement activities, to show the suitability and effectiveness of the system and to create customer satisfaction within this framework. The source of this data may be requests and suggestions and complaints from customers, supplier evaluations, surveys for various purposes, internal audit studies or monitoring and measurement reports. By using these data, information is obtained on compliance with customer conditions, customer satisfaction level or product or service features offered.

The data analysis procedure includes how and from which processes data will be collected, by whom, and how to record. It also describes which methods will be used to analyze this data. Problems are revealed by statistical analysis methods and their causes are examined and it is prevented to repeat these problems.

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