Per capita margarine consumption

As Americans have consumed less margarine, UK pint prices have risen, a transatlantic negative correlation of -0.988 that connects the decline of a spread to the inflation of a beverage with the economic poetry of two trends that share nothing except opposite directions and the same decade. The margarine melts away, the pint price builds up, and the chart draws a line between declining American breakfast habits and rising British pub costs.

Margarine consumption declined from about 3.5 to under 2.5 pounds per capita between 2010 and 2022 as Americans shifted to butter and trans-fat fears accelerated margarine's fall. UK pint prices rose steadily with inflation. One trend smoothly declines, the other smoothly rises, and the negative correlation is the mathematical consequence of their opposite directions across eleven years. American spreads and British beer share an era but not a causal chain.

Eleven years of less margarine and more expensive pints is a negative correlation that means precisely what it sounds like: one thing went down while another went up during the same period. The margarine declined because of dietary fashion, the pint rose because of economics, and the chart treated both with the mathematical symmetry of a coefficient that does not read food labels or pub menus.