Month-over-month catches turning points quickly but bounces around; year-over-year smooths noise but reacts slowly. Read both like weather and climate together. If the short series cools while the long stays warm, expect narrative shifts before policies or forecasts officially change.
A chart starting at zero feels calmer than one starting near the action. Percent changes can hide level shifts that matter for rent, wages, and debt. Always ask, what does one unit mean for my actual bills, savings, or options?
A simple three-point average can calm spiky series without erasing the signal. Use it to judge whether a surge or slump persists. When the smoothed line bends, consider pacing decisions—like hiring, saving, or inventory—before headlines echo the same change.
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