When applying a statistical method in practice it often occurs that some observations deviate from the usual assumptions. However, many classical methods are sensitive to outliers. The goal of robust statistics is to develop methods that are robust against the possibility that one or several unannounced outliers may occur anywhere in the data. These methods then allow to detect outlying observa...

The objective was to build a ranking of football players based on multivariate methods. evaluated were the winners FIFA; UEFA; Ballon D'Or; FIFPro; World Soccer; Golden Ball Cup and King América awards. A total 95 variables: games played, wins, draws, losses, goals scored, yellow/red cards, awards, dream team, title in national leagues/ continental championships club, world cups/ championship O...