The first badge, presented in 1927, had a heater shield design with the country’s name and the federation’s acronym (FPF). Eight different emblems followed, with the longest-lasting design being the modern French escutcheon form emblazoned in the team’s jersey from 1953 until 2014. This design had the Peruvian flag at its base, and either the country’s name or the federation’s acronym at its chief. The methods the French deploy to cultivate talent in its youth population were a revelation to me – counter to so many of the features that we had tacitly embraced in the U.S. The formula you normally use to calculate the correlation between two variables is the Pearson correlation coefficient.