Check the core maintenance reasoning

You have inspected the source sensors, anomaly detection, health scores, and ontology relationships in sequence. Before stating the final decision, distinguish the concepts that can look similar. This quiz has no passing score and does not lock the next chapter.

Core decision check

Select an answer to see the correct choice and its evidence immediately.

0/4 questions reviewed

Question 1 What directly made CNC-03, CNC-05, and CNC-09 HIGH?
The three sensor values have different numeric magnitudes.Each source row has a quality_flag containing a HIGH_* state.All three z-scores are at or above sigma 3.0.
Question 2 Why do the same three HIGH rows remain when sigma increases from 3.0 to 3.15?
The explicit quality-signal rule preserves HIGH rows independently of the statistical threshold.Changing sigma automatically increases every z-score by the same ratio.The health rollup always fixes the anomaly output at three rows.
Question 3 Should CNC-01 become the first inspection target because it has three sensor types?
Yes. More connected sensors always mean greater current risk.No. Sensor count describes configuration, not a current HIGH alert or maintenance incident.Yes. Every machine connected in the ontology automatically becomes HIGH.
Question 4 What is this workshop's conclusion when all three machines have a health score of 90?
Inspect only CNC-03 and return CNC-05 and CNC-09 to normal operation.Inspect all three machines, starting with CNC-03 under the published tie-break rule.Keep all three machines running until another data point breaks the tie.

Connect the evidence in one statement

Next decision

You have separated the four pieces of evidence. In the final chapter, return to the original shift question and combine the inspection scope and first stop into one explanation.

Check the core maintenance reasoning

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Why this matters now

Core decision check

Connect the evidence in one statement

Next decision