Fig. 2: Widths of distributions of log prices.
From: Basic food and drink price distributions transcend time and culture
Conservative estimates of the width of the distribution of log prices using data from different cultures and continents, covering three thousand years. The light grey band suggests a Goldilocks principle, of neither too much nor too little width. Note that the German hyperinflation data appear as a peak with a height of ~0.3, despite the fact that the underlying log prices increased by about 10.
