AI Analysis: Consumer Price Index, monthly, not seasonally adjusted

Executive Summary

This analysis of Statistics Canada's CPI dataset (1914-2026, 188,744 records) reveals over a century of Canadian inflation, with the All-items index rising 2,726.7% from 6.0 to 169.6. The data spans 358 product groups and 11 base-year references, with 'Fuel oil and other fuels' (427.8) showing the highest price growth and 27 statistically significant outlier months identified across the historical series.

Key Findings

• The All-items CPI increased 2,726.7% from 6.0 in January 1914 to 169.6 by May 2026, reflecting over a century of sustained inflation.
• CPI values across all 358 product groups range from 3.10 to 477.00, with 'Fuel oil and other fuels' (427.8) topping the list and 'Digital computing equipment and devices' (12.2) at the bottom.
• The dataset's mean CPI value (89.71) is lower than its median (93.60), indicating a left-skewed distribution influenced by low historical values.
• 27 months were flagged as statistical outliers (z-score > 3) where month-over-month CPI changes deviated sharply from the typical 0.251% average change.
• The index has been rebenchmarked 11 times across different base-year references (e.g., 2002=100, 2017=100), complicating direct value comparisons across eras.
• Correlation analysis of the top 10 product groups showed predominantly positive relationships, suggesting broad, shared inflationary drivers across categories.
• The dataset provides granular long-format tracking of 358 distinct product groups over 1,349 monthly observations, enabling detailed category-level price trend analysis.