Classical

Statistics and methodology - Statistics and Methodology Multiple Choice Questions

31:  

The mean wage of a certain group of workers is 500 rupees and a is 100. Find what percentage of workers get above 375 rupees

A.

39.12%

B.

89.44%

C.

80.43%

D.

16.12%

 
 

Option: B

Explanation :

Z = (X - μ)/σ

= (375 – 500)/100

= 1.25

The area according to table is 0.3944.

The total area will be   = 0.5 + 0.3944

= 0.8944

or            0.8944 x 100 = 89.44%

Hence the answer is (b).


32:  

A trader decides that he has surplus stocks of 9 different kinds of goods. He decides to make-up gift parcels, each to contain four different goods, which he will sell at a special price. How many different kinds of parcel may he produce?

A.

119

B.

126

C.

112

D.

130

 
 

Option: B

Explanation :

Hence the answer is (b).


33:  

The structured systems analysis develops _______ of the system

A.

Graphical model

B.

Logical model

C.

Conceptual model

D.

Air of the above

 
 

Option: D

Explanation :


34:  

R1∙23 is

A.

Sample correlation

B.

Multiple correlation

C.

Regression analysis

D.

Partial correlation

 
 

Option: B

Explanation :


35:  

Given

a

b

(a+b)

c

d

(c+d)

(a+c)

(b+d)

N

The above table is used for

A.

Computing ϰ2

B.

Computing regression analysis

C.

Computing correlation

D.

Computing average

 
 

Option: A

Explanation :




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