Stratification is a tool that is used to search for the quality of processes, especially in management. Its objective is to contribute data to decision-making in problems or complex circumstances in a company or institution.
Stratification or stratified sampling is a statistical tool for analysis and improvement of companies. It is based on the division of the massive data obtained in different stages or segments that are obtained from surveys, research or other sources.
Stratification is a statistical tool for analysis and improvement of companies.
When a large amount of data is obtained from a source, it must be divided by layers so that it can be processed easily and that it can be of use.
Sources of stratification
Here are several examples of different layers from which the necessary information is obtained:
1) Equipment and goods: if they are office machinery, industrial production, transport or premises or offices. In addition, its time of use, models, technologies and applications within the company.
2) Currency exchanges: if the company makes purchases or exports, the different types of currencies or exchanges with which the company manages are taken.
3) Departments: personnel are divided by each department or division that the company has.
4) Characteristics of employees: a stratified sample is made by sex, age ranges, position held, number of years.
5) Production: production schedules, how it is carried out, types of products, number of employees per stage of production.
5) Inventory: it can be separated by types of raw materials, suppliers, types of products, dates of entry or exit from the warehouse.
6) Hours and working days: day of the week, hours of the day, holidays, etc.
7) Surveys: in this case it will depend on the type of consultation that is made and the questions that are included. Stratified sampling can be performed for the type of respondents and their ages or sex. For the different answers to the questions, if they are affirmative, negative or have no answer, among other categories.
How is layering done?
First, the situation or problem in which you want to apply stratified sampling must be determined.
Next, determine which will be the sources that will be used for the stratification. For example, if it is a situation associated with the production of the company, the sources of production, inventory and work schedules must be taken.
This step is important, because by clearly knowing the layers that will be used, you will be able to better understand the situation.
Third, it is obtaining the necessary data from the different defined sources.
Subsequently, perform the analysis of the data obtained. At this stage, the company's operating flow can be observed in the strata obtained in order to visualize the problem or situation addressed in detail.
It is important to graph the data to facilitate the analysis process.
Finally, after analyzing the situation using the data obtained, a group of possible solutions or measures to be taken to solve the problem are generated, before the stratification process.
References
- Stratification, about 7 basic quality tools. ASQ COMPANY. Recovered from the site: asq.org
- What is Stratification ?. MANAGEMENT STUDY GUIDE. Recovered from the site: managementstudyguide.com
- Stratified sampling or stratification: What it is and how it is done. WITNESS & COMPANY. Recovered from the site: ingenioempresa.com
- Stratification: statistical tool for analysis and improvement. MORA, CRISTINA: Recovered from the site: prezi.com
- Image N1: gM. Professional Resume Writing. Recovered from the site: gmprofessionalresumewriting.com.