If thinking intuitively, I would assume both statistical tests would be used in both the decision tree and clustering. The chi-square test helps with modeling a “good-fit,” therefore, in both decision tree and […]

1) Decision Trees remind me of ERDs in the sense that they’re like blueprints; Decision trees help a firm, or group to create real life situations with possible solutions with contingency plans. And just like […]

The Cookbook doesn’t link.

SELECT COUNT(*) FROM MOVIEDB.ACTOR

Count, I believe, is one of the more useful tools in SQL that will be commonly used to retrieve analytical data in the business world (not to say others like AVG and MIN/MAX aren’t).

I learned that ER diagrams help form a logical string of how databases are created; once the diagrams are complete, the schemas show the relationships in a easier-to-read format as data and then used for […]

I will do my best to point out other pieces of data that the others have not mentioned:

1) What their profile picture is and how often they change it – could be pictures of the beach, family, kids, new haircut, […]

It depends on the organization; if I’m an advertising agency, I would put data as a higher priority, however, if I’m in the business of selling stuff, information would be a higher priority.