The final lesson states the boundary: this is deterministic Pareto tally arithmetic.
highlighted = computed this step
Deterministic tally
The chart uses deterministic defect counts.
deterministic defect tally arithmetic
Not root cause
It does not prove root causes or improvement.
outside scope: root cause and improvement proof
Not SPC
It does not model statistical process control, sampling error, or cost of quality.
outside scope: SPC, sampling error, cost of quality
Honesty note
This is deterministic defect tally and Pareto arithmetic only. It does not prove root causes, statistical process control, cost of quality, sampling error, or improvement.