Let say you want to test whether the population distributions of the number of goals scored (in all competitions) are the same for the 90 European clubs. As you don't have much time in your hands, you select a random sample of 10 matches for each club with name started with letter A to L (e.g., Arsenal, Burnley, ..., Lazio) and a random sample of 15 matches for each club with name started with letter M to Z (e.g., Manchester City, ..., Zenit St Petersburg). If you use the Kruskal-Wallis test, what is the degree of freedom?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.