Stratification
Analysis
Stratification
Separation of data into meaningful groups such as shift, machine, supplier or product to expose patterns.
Examples
- 01Stratification of 200 customer complaints by plant, shift and product shows that 60 % come from one product made on night shift.
- 02The analyst applies stratification by supplier as well, and finds that one supplier's batches cause most of the night-shift problems.
- 03Without stratification, the team would have started a plant-wide project; now it can focus on one supplier and one shift.