Question 16 :
In OLAP, we are interested in ________ .
A). levels only
B). dimensions only
C). measures only
D). measures and dimensions
Question 17 :
Which of the following is not a reason that operational data are difficult to read?
A). Non-duplicated data
B). Dirty data
C). Missing values
D). Non-integrated data
Question 18 :
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 ________ .
A). the basic probability
Question 19 :
One popular classification technique in Business Intelligence (BI) reporting is ________ .
A). cluster analysis only
B). regression analysis only
C). RFM analysis only
D). both cluster analysis and regression analysis
Question 20 :
We have done an RFM analysis on our customer data. Mary Jones has a score of "1 1 5". This series means that Mary ________ .
A). Has ordered recently, orders frequently, and places a large order when she orders.
B). Hasn't ordered recently, orders infrequently, but places a large order when she orders.
C). Has ordered recently, orders frequently, but doesn't place a large order when she orders
D). Hasn't ordered recently, orders infrequently, and doesn't place a large order when she orders.