latile items account for about a quarter of CPI but they tend to be very volatile and distort the underlying trend. The Bank of Canada pays most attention to the Core data - so do traders. This is among the few non-seasonally adjusted numbers reported on the calendar, as it's the calculation most commonly reported;
Why Traders
Care Consumer prices account for a majority of overall inflation. Inflation is important to currency valuation because rising prices lead the central bank to raise interest rates out of respect for their inflation containment mandate;