Bureau of Labor Statistics (BLS) publishes and archives monthly unemployment and consumer price index data. The CPI data is stored as 1-month percentage change, indicative of the monthly inflation rate. The current data archive goes back to 2003 for each. A quick data manipulation procedure in Excel gets each tabular output into a series output for juxtaposition.
The Phillips Curve is a historical inverse relationship between unemployment and inflation rate. The data from the 10 years here demonstrates a very strenuous inverse relationship. Here the slope of the best-fit line is -0.02135, but the R^2 value was merely 1.29%.
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