81. A research problem is feasible only when
- it is researchable
- it is new and add something to knowledge
- it has utility and relevance
- all of these
82. All causes non-sampling errors except
- faulty tools of measurement
- inadequate sample
- non response
- defect in data collection
83. Area (cluster) sampling technique is used when
- population is scattered and large size of the sample is to be drawn
- population is heterogeneous
- long survey is needed
- (a) and (c)
84. Which of the following is a non-probability sample?
- Quota sample
- Simple random sample
- Purposive sample
- both (a) and (c)
85. The final result of a study will be more accurate if the sample drawn is
- taken randomly
- fixed by quota
- representative to the population
- purposive
86. A statistical measure based upon the entire population is called parameter while measure based upon a sample is known as
- sample parameter
- inference
- statistic
- none of these
87. Which technique is generally followed when the population is finite?
- Area sampling technique
- Purposive sampling technique
- Systematic sampling technique
- None of the above
88. A researcher selects only 10 members as a sample from the total population of 5000 and considers it good because
- he was a good researcher
- he was guided by his supervisor
- the populations were homogeneous
- all of these
89. A researcher divides his population into certain groups and fixes the size of the sample from each group. It is called
- stratified sample
- quota sample
- cluster sample
- all of the above
90. A researcher divides the populations into PG, graduates, and 10 + 2 students, and using the random digit table he selects some of them from each. This is technically called
- stratified sampling
- stratified random sampling
- representative sampling
- none of these