the y axis on this chart
What's the retention rate?
Is retention in constant terms here? (edited to fix a unit)
Not quite — the 2015 figure is a definition change.
Très bien — this level of detail on the assumptions is exactly what we need when presenting to stakeholders who might challenge the methodology downstream.
Stale.
Should the anomaly be in absolute terms for this comparison to mean anything?
The units are missing from the tick labels.
The trend looks right.
Not quite — the 2018 figure is a rounding artifact.
Fair enough.
Nice — the Q4 view helps.
Which source is
Year coming from?