Diagnose

Ratio trends

What it is

What it shows

Three ratios per month: prevention divided by failure, appraisal divided by failure, and external failure as a share of the total.

Why it matters in manufacturing

Ratios cancel out production volume and show the structure of quality cost, which makes months and plants comparable.

How to read it

Prevention to failure should rise and the external failure share should fall. Appraisal to failure rising while failure stays flat means more checking without fewer defects.

What good looks like

Prevention to failure rises, appraisal to failure holds or falls, and the external failure share falls, all at the same time.

Expert view

The expert is reading the figures…

Concern

There is a problem here worth looking into.

What we observe

Good: Prevention per unit of failure cost rose from 0.14 to 0.32 (+135%).
Fact: Recently 0.35 of prevention for every 1 of failure cost.
Fact: Appraisal per unit of failure cost rose from 0.50 to 0.67.
Problem: External failures average 48% of failure cost (−3.0 pt over the period).

Keep in mind

One set has a record count that differs from AlisQI.
The token cannot read 5 sets, so the total may be partial.

Computed by the app from the figures in this view. Data as of 9 Nov 2026 02:14.