Fundamentals of Statistics contains material of various lectures and courses of H. Lohninger on statistics, data analysis and chemometrics......click here for more. 
Home Exercises Similar Mineral Waters  
See also: survey of exercises, missing values, cluster analysis  
Exercise  Similar Mineral WatersA problem often encountered in data analysis is finding the most similar observations in a set of data. There are several ways to uncover similarity between individual data sets. You can either use algorithms of cluster analysis, or rely on visual inspection by using principal component analysis to look at the highdimensional data set. Using the correlation table may be misleading, since the correlation does not reflect absolute values. Use the data set MINWATER
to find
(1) the two most similar brands of mineral water in the data set,
You can now go directly to the DataLab in
order to experiment with the data.


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