Tracing where yield fell

Slice by lot, tool, chamber, and time to narrow down where it started going wrong.

What this is

  • The overall average hides where it broke — the order you slice in decides the answer.

When this applies

  • Yield dropped on some day and nobody knows what changed

How it runs

  • Pin down the moment it dropped
  • Keep only what differs across that moment

What you receive

  • A yield breakdown by segment with the suspect segment named

Level of experience

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