What is Taxonomy?

Stratified method

Data stratification can be carried out in various ways according to the actual situation. For example, stratify according to different time and different shifts, stratify according to the type of equipment used, stratify the raw material composition according to the feeding time of the raw materials, stratify according to the inspection methods and use conditions, and stratify according to different defects Layers, etc.

The data layering method is often the same as the above

The application of the data layering method is mainly a system concept, that is, if you want to process quite complex data, you need to understand how to organize these data systematically and purposefully into categories and statistics.

Scientific management emphasizes the use of management techniques to make up for the lack of management based on experience and visual judgment. In addition to establishing a correct concept, this management technique also requires the use of data in order to have a way to analyze the work and take corrective measures.

How to establish original data and aggregate these data according to the required purpose is also the most basic work of many quality control methods.

For example: China's aviation market has become increasingly fierce with the opening up in recent years. In addition to strengthening various measures to win the market, airlines are also working on service quality. We can also often see customer satisfaction surveys on the aircraft. This survey was conducted through a questionnaire. The design of the questionnaire is usually divided into the service quality on the ground and the service quality on the aircraft. The ground is divided into booking and waiting; the aircraft is divided into air service attitude, catering, health and so on. Through these surveys and collecting these data, we can find out where to improve service quality.