Database Processing for BIS - General Questions

1.

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

Explanation:

No answer description available for this question. Let us discuss.

2.

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

Explanation:

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3.

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

Explanation:

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4.

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

Explanation:

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5.

In OLAP, we are interested in ________ .

A.	levels only
B.	dimensions only
C.	measures only
D.	measures and dimensions

Answer: Option D

Explanation:

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6.

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

Explanation:

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7.

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

Explanation:

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8.

The reports generated by a reporting system are usually not delivered in which of the following media?

A.	Web portal
B.	Commercial courier service
C.	Digital dashboard
D.	E-Mail

Answer: Option B

Explanation:

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