9c. Useful charts
Such charts can take many forms
- Tabular: Listing sample status and variances
- Histograms: planned and actual by date or sample
- Pareto diagrams: cumulative percent frequencies
- Scatter diagrams: single plot results, or scores over time in or out of set boundaries
Variances
- Can also be flagged
- As random, typical or expected
- Or green, orange or red
- Now receiving urgent attention !