Database Processing for BIS Questions and Answers

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Q11
Data mining applications are used accomplish which of the following tasks?
  • A Process transactions only
  • B Do RFM analysis only
  • C Do what-if analysis only
  • D Do both RFM and what-if analysis
Answer: Option C
Q12
Which of the following is an unsupervised data mining technique?
  • A Cluster analysis only
  • B Regression Analysis only
  • C RFM Analysis only
  • D Both Regression Analysis and RFM Analysis
Answer: Option A
Q13
In OLAP, we are interested in ________ .
  • A levels only
  • B dimensions only
  • C measures only
  • D measures and dimensions
Answer: Option D
Q14
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
Answer: Option A
Q15
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
  • B support
  • C lift
  • D confidence
Answer: Option D
Q16
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
Answer: Option C
Q17
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.
Answer: Option C

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