Clustering non-numeric -- or categorial -- data is surprisingly difficult, but it's explained here by resident data scientist Dr. James McCaffrey of Microsoft Research, who provides all the code you ...

Sparklines are small charts that fit into a single Microsoft Excel cell. But if you’re tracking non-numeric data, they can exhibit weird behavior. Learn how to avoid problems when using sparklines.

Writing software that does not involve numbers. Non-numeric programming deals with objects, such as words, board game pieces and people. See list processing. THIS DEFINITION IS FOR PERSONAL USE ONLY.

Clustering data is the process of grouping items so that items in a group (cluster) are similar and items in different groups are dissimilar. After data has been clustered, the results can be analyzed ...