http://www.neilson.co.za/k-means-cluster-analysis-in-microsoft-excel/ http://www.neilson.co.za/k-means-cluster-analysis-in-microsoft-excel/
http://www.microsoft.com/en-us/download/details.aspx?id=35578 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 http://blogs.msdn.com/b/data__knowledge__intelligence/archive/2013/05/21/data-mining-plugin-for-excel-2013.aspx
http://people.revoledu.com/kardi/resources/index.html http://people.revoledu.com/kardi/resources/index.html