DATABASE PROCESSING FOR BIS QUIZ

Data warehouse data are usually normalized.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is an unsupervised data mining technique?

Both Regression Analysis and RFM Analysis

RFM Analysis only

Cluster analysis only

Regression Analysis only

TRUE ANSWER : ?
YOUR ANSWER : ?

A BI reporting system does not ________ .

deliver information to users on a timely basis

use statistical procedures to predict future events

create meaningful information

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 : ?

A report generated by a reporting system is delivered to the appropriate users via a user-accessed Web site. This system uses which of the following report modes?

OLAP

Pull

Push

RFM

TRUE ANSWER : ?
YOUR ANSWER : ?

OnLine Analytical Processing (OLAP) is a BI reporting system.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are not done by Business Intelligence (BI) systems?

Both of the above are correct.

Neither of the above is correct.

Process and record transactions only

Analyze past and current activities only

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 ________ .

confidence

support

the basic probability

lift

TRUE ANSWER : ?
YOUR ANSWER : ?

Market basket analysis primarily uses the technique of conditional probabilities.

False

True

TRUE ANSWER : ?
YOUR ANSWER : ?

Business Intelligence (BI) systems do not obtain data from operational databases.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

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