Basic tools of quality

Basic tools of quality

1. Stratification

   • Stratification analysis is a quality control tool used to classify data, objects, and people into separate and distinct groups. Separating data through stratification can help you determine its meaning and reveal patterns that might otherwise go unnoticed when pooled.

2. histogram

   • The histogram can help you clearly and concisely represent the frequency distribution of data between different groups in a sample, allowing you to quickly and easily identify areas for improvement within processes. The structure is similar to that of a bar chart: each bar within a histogram represents a group, and the height of the bar represents the frequency of the data within that group.

3. Verification (or tally) sheet