http://people.revoledu.com/kardi/resources/index.html

addin excell funkties, free to try:

http://www.dataminerxl.com/features.html

vba script for k means clustering in excel:

http://www.neilson.co.za/k-means-cluster-analysis-in-microsoft-excel/

 

download ms excell addin van microsoft, probeer zonder sql server:

http://www.microsoft.com/en-us/download/details.aspx?id=35578

http://blogs.msdn.com/b/data__knowledge__intelligence/archive/2013/05/21/data-mining-plugin-for-excel-2013.aspx   << uitleg