21.Identify the group that contains only non-probability sampling techniques :
Purposive, convenience, simple random and snowball
Purposive, convenience, volunteer and snowball
Convenience, simple random, volunteer and snowball
Simple random, purposive, volunteer and snowball

22.Multiplexing is process of transmitting ..................... via single carrier.
Several different signals
Complex signals
Solo signals
Diverting signals

23.The ‘methodology section’ of the research plan specifies .........
Population and sample
Results of prior studies
Apparatus, instruments and materials
Both (A) and (C)

24.Which of the following includes examples of quantitative variables ?
Age, temperature, weight, height
Grade point average, income
Gender, religion, ethnic group
Both (A) and (B)

25.Which of the following terms best describe data that were originally collected at an earlier time by a different person for a different purpose ?
Primary data
Secondary data
Experimental data
Field notes

26.A probability which is associated with the occurrence of an event is expressed as a number between :
0 and 1
+1 and –1
–1 and 0
1 and < 1

27.Whether library is a system ?
Yes, it has its sections as a system has
No, it cannot be a system
Quite impossible
Library is separate from a system

28.‘Quality Circles’ in organization is used in :
Personnel Estimation
Personnel Evaluation
Budgetary Control
Participative Management

29.The motivation theory that is based on two stimuli motivators and hygienic factors is suggested by :
McGregor
Argyris
Maslow
Herzberg

30.Combination of any two or more topologies is called as .......
Unique
Hybrid
Bus
Physical