järjestyskorrelaatioon
Järjestyskorrelaatio is a Finnish term that translates to "rank correlation" in English. It refers to a type of statistical correlation that measures the strength and direction of a relationship between two ranked variables. Instead of using the actual values of the data, rank correlation methods assign a rank to each data point within its variable and then analyze the correlation between these ranks. This makes it particularly useful when dealing with ordinal data or when the assumption of a linear relationship between the variables is not met.
The most common methods for calculating rank correlation are Spearman's rank correlation coefficient (Spearman's rho) and
Rank correlation is valuable because it is less sensitive to outliers than parametric correlation methods like