I have written quite a lot of reports, highlighting results from a wide range of activities. Based on the feedback received and from the requests of changes intervened from the first version to the definitive one, I can tell you the following basic principles for producing a good data mining report:

• Clearly show the objectives and questions that initiated the analyses performed
• Explicitly highlight the assumptions made when performing the analyses
• Enumerate and get into the details with data treatment applied to analyzed data
• Always verify that the reproduced data is consistent
• Provide data lineage to the maximum possible extent

Let's get a bit deeper into these principles before we actually develop our report.