Classical

Statistics and methodology - Statistics and Methodology Questions Answer

46:  

Which of the following statements are correct?

A.

1. Correlation analysis helps in determining the relationship between two or more variables. It does not tell us anything about the cause and effect relationship.

2. The ratio of explained variation to the total variation is called the coefficient of correlation.

3. Pearsonian coefficient always assumes linear relationship, and is unduly effected by the extreme items.

B.

1 and 2

C.

1 and 3

D.

2 and 3

 
 

Option: C

Explanation :

1, 2 and 3

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47:  

The features of LAN consist

A.

A departmental integrity and implementation of the critical application

B.

A customised application environment

C.

A multiuser cost effective environment

D.

All of the above

 
 

Option: B

Explanation :

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48:  

Production of MIS includes

A.

Decision support systems

B.

Query processing

C.

Exception reporting

D.

All of the above

 
 

Option: D

Explanation :

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49:  

DFDs includes

A.

Process centre

B.

Sources of documents

C.

Documents in the system

D.

All of the above

 
 

Option: D

Explanation :

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50:  

In short time we gather information about population by

A.

Enumeration

B.

Counting

C.

Sampling

D.

Observation

 
 

Option: C

Explanation :

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