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It's a function to apply ranking aggregation. The highest value is the first value of rank
rank_aggregation(data)
It returns a dataframe with rows = observations and column = composite indicator
dataframe with rows = observations and columns = quantiative variables
OECD/European Union/EC-JRC (2008), Handbook on Constructing Composite Indicators: Methodology and User Guide, OECD Publishing, Paris, <https://doi.org/10.1787/9789264043466-en>
data("Education") Indicator_rank=rank_aggregation(Education) print(Indicator_rank)
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