And you just added one more sharp tool into your toolbox! This chapter was surely less intense than the previous one; nevertheless, it gifted you a relevant edge for crafting reports about your data mining activity. 

The first relevant point you learned within the chapter is that a report, in order to be effective, has to respect some core principles mainly related with clearness of objectives and assumptions, consistency, and replicability of results.

Furthermore, you learned how to set up and fill down an rmarkdown report composed of markdown slices of text and r code chunks. This powerful instrument lets you create reports made on your R code and easily update the results as the data changes.

Finally, you got in touch with the fast-growing world of the Shiny app, a complete ecosystem for web application development and deployment.

Your job is done at Hippalus Inc., but if you look after this page, something interesting is waiting for you. You get closer to discovering the cause of the amazing drop in revenues. Aren't you curious to discover the truth lying behind the data?