Question 1

By constructing models, the problems in libraries increase and cannot be solved.

Accepted Answer

A) True 
 B)False

Question 2

If =100 and Y=2X - 200, then mean of Y values will be:

Accepted Answer

A) 0 
B) 2 
C) 100 
D) 200 
A) 0 
B) 2 
C) 100 
D) 200

Question 3

If in a discrete series 75% values are greater than 50, then:

Accepted Answer

A) Q1 = 50 
B) Q1  50 
D) Q1 ? 50 
A) Q1 = 50 
B) Q1  50 
D) Q1 ? 50

Question 4

Any measure indicating the centre of a set of data, arranged in an increasing or decreasing order of magnitude, is called a measure of

Accepted Answer

A) Skewness 
B) Symmetry 
C) Central tendency 
D) Dispersion 
A) Skewness 
B) Symmetry 
C) Central tendency 
D) Dispersion

Question 5

Which of the following average cannot be calculated for the observations 2, 2, 4, 4, 6, 6, 8, 8, 10, 10 ?

Accepted Answer

A) Mean 
B) Median 
C) Mode 
D) All of the above 
A) Mean 
B) Median 
C) Mode 
D) All of the above

Question 6

Which technique is used in finding a solution for optimizing a given objective, such as profit maximization or cost reduction under certain constraints?

Accepted Answer

A) Qualing theory 
B) Waiting Line 
C) Both A and B 
D) Linear Programming 
A) Qualing theory 
B) Waiting Line 
C) Both A and B 
D) Linear Programming

Question 7

If the arithmetic mean of 20 values is 10, then sum of these 20 values is:

Accepted Answer

A) 10 
B) 20 
C) 200 
D) 20 + 10 
A) 10 
B) 20 
C) 200 
D) 20 + 10

Question 8

Scores that differ greatly from the measures of central tendency are called:

Accepted Answer

A) Raw scores 
B) The best scores 
C) Extreme scores 
D) Z-scores 
A) Raw scores 
B) The best scores 
C) Extreme scores 
D) Z-scores

Question 9

The measure of central tendency listed below is:

Accepted Answer

A) The raw score 
B) The mean 
C) The range 
D) Standard deviation 
A) The raw score 
B) The mean 
C) The range 
D) Standard deviation

Exam 1: Measures of Central Tendency and Operations Research