HERRAMIENTA DE ESTRATIFICACIÓN (HERRAMIENTAS DE LA CALIDAD)

Stratification Tool: Understanding and Application

Introduction to Stratification

• The stratification tool is introduced as a method for classifying data derived from problem detection in processes. It serves as a foundation for analyzing quality control.

• Stratification involves categorizing data based on various factors such as personnel, materials, time, environment, location, machinery, defects, or failures.

Purpose and Application of Stratification

• This statistical method prepares data for further graphical analysis and helps identify significant causes influencing data variation.

• Key steps include defining the problem, evaluating related data, selecting factors to analyze, measuring contributions of each factor, and using graphical representation to find trends.

Analyzing Data Differences

• Comparing average values across different strata allows for identifying significant differences; if none exist, reclassification may be necessary.

• If a major cause is identified through this analysis, further conclusions can be drawn to develop corrective action plans.

Advantages of Using Stratification

• The tool helps avoid problems by identifying the influence of specific factors on process outcomes and supports various quality tools.

• A case study at Sunshine Resort illustrates how stratification was used to address excessive cleaning product usage linked to staff rotation.

Case Study: Sunshine Resort

• Data tables show cleaning product usage across shifts (morning, afternoon, night), revealing that the morning shift in Tower 1 had the highest empty containers.