How much everyday prices moved from a year ago
CPI bundles the prices of things households buy often into one index. Comparing it with the same month a year earlier tells you how strong inflation is. Central banks raise and cut rates by watching this number, so stocks and currencies tend to move on release day. A core figure, stripping out volatile items like fresh food, is usually read alongside it.
A CPI of 3% year on year means a $100 basket now costs about $103.
For learning, not investment advice. Decisions are your own.
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