RFM analysis uses customer's purchasing patterns to ________ . record transactions perform OLAP predict future sales using regression techniques analyze and rank customers TRUE ANSWER : ? YOUR ANSWER : ?
The "F" in RFM analysis stands for ________ . fantasy freshness frequently fast food TRUE ANSWER : ? YOUR ANSWER : ?
We have been given access to the company's operational data, and have been asked to produce a report. We discover that some of the data we need are in an SQL server database while other needed data are in a separate Oracle database. This is an example of ________ . dirty data a "wrong format" problem inconsistent data non-integrated data TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a component of a data warehouse? Data extraction/cleaning/preparation programs None of these Data metadata Data warehouse data TRUE ANSWER : ? YOUR ANSWER : ?
In a common form of RFM analysis, customers are sorted in five groups and given a score of 1 to 5 depending on their group. False True TRUE ANSWER : ? YOUR ANSWER : ?
We have Market Basket data for 1,000 rental transactions at a Video Store. There are for videos for rent -- Video A, Video B, Video C and Video D. The probability that both Video C and Video D are rented at the same time is known as ________ . confidence lift the basic probability support TRUE ANSWER : ? YOUR ANSWER : ?
We have Market Basket data for 1,000 rental transactions at a Video Store. There are four videos for rent -- Video A, Video B, Video C and Video D. The probability that Video D will be rented given that Video C has been rented is known as ________ . support confidence the basic probability lift TRUE ANSWER : ? YOUR ANSWER : ?
In OLAP, we are interested in ________ . measures and dimensions measures only levels only dimensions only TRUE ANSWER : ? YOUR ANSWER : ?