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 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 ________ . the basic probability support lift confidence TRUE ANSWER : ? YOUR ANSWER : ?
A BI reporting system does not ________ . use statistical procedures to predict future events create meaningful information deliver information to users on a timely basis use disparate data sources TRUE ANSWER : ? YOUR ANSWER : ?
Data Mining uses simple arithmetic techniques such as sums, averages, and groupings to perform what-if analyses, to make predictions, and to facilitate decision making. False True TRUE ANSWER : ? YOUR ANSWER : ?
Most operational databases can be used for many BI applications. False True TRUE ANSWER : ? YOUR ANSWER : ?
The "curse of dimensionality" relates to which problem of using operational data for BI reporting? Inconsistent data Dirty data Too much data Non-integrated data TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a reason that operational data are difficult to read? Non-duplicated data Non-integrated data Missing values Dirty data TRUE ANSWER : ? YOUR ANSWER : ?
A data mart is a collection of data that, while smaller than a data warehouse, still addresses the entire business. False True TRUE ANSWER : ? YOUR ANSWER : ?
We have done an RFM analysis on our customer data. Mary Jones has a score of "1 1 5". This series means that Mary ________ . Hasn't ordered recently, orders infrequently, and doesn't place a large order when she orders. Hasn't ordered recently, orders infrequently, but places a large order when she orders. Has ordered recently, orders frequently, but doesn't place a large order when she orders Has ordered recently, orders frequently, and places a large order when she orders. TRUE ANSWER : ? YOUR ANSWER : ?