Research Aptitude MCQ QUESTION ANSWERS UGC NET
If an examiner, inadvertently, allows three minutes extra time to some subjects in the group on a test of intelligence used in a research, this will introduce in the experiment
Sampling error of random nature.
Measurement error of random nature.
Measurement error of constant nature.
Sampling error of constant nature.
Which tests are used in explanation of results?
Both of them
None of these.
Which of the following is classified in the category of the developmental research?
All the above
If the sample drawn does not specify any condition about the parameter of the population, it is called
Distribution free statistics
Non of the above
The meaning of the Historical method of research is
To employ scientific method in order to study the historical problems
To establish relationship between historical facts and current events
To make specific investigation of the past events
All the above
Which variable is deliberately manipulated by an experimenter to investigate its effect?
When every item in the universe has an equal chance of inclusion in the sample it is Called
non. probability sampling
Question 7 Explanation:
Probability sampling is also known as ‘random sampling’ or ‘chance sampling’. Under this sampling design, every item of the universe has an equal chance of inclusion in the sample. It is, so to say, a lottery method in which individual units are picked up from the whole group not deliberately but by some mechanical process. Here it is blind chance alone that determines whether one item or the other is selected. The results obtained from probability or random sampling can be assured in terms of probability i.e., we can measure the errors of estimation or the significance of results obtained from a random sample, and this fact brings out the superiority of random sampling design over the deliberate sampling design. Random sampling ensures the law of Statistical Regularity which states that if on an average the sample chosen is a random one, the sample will have the same composition and characteristics as the universe. This is the reason why random sampling is considered as the best technique of selecting a representative sample.In such a design, personal element has a great chance of entering into the selection of the sample. The investigator may select a sample which shall yield results favourable to his point of view and if that happens, the entire inquiry may get vitiated. Thus, there is always the danger of bias entering into this type of sampling technique. But in the investigators are impartial, work without bias and have the necessary experience so as to take sound judgement, the results obtained from an analysis of deliberately selected sample may be tolerably reliable. However, in such a sampling, there is no assurance that every element has some specifiable chance of being included. Sampling error in this type of sampling cannot be estimated and the element of bias, great or small, is always there. As such this sampling design in rarely adopted in large inquires of importance. However, in small inquiries and researches by individuals, this design may be adopted because of the relative advantage of time and money inherent in this method of sampling. Quota sampling is also an example of non-probability sampling. Under quota sampling the interviewers are simply given quotas to be filled from the different strata, with some restrictions on how they are to be filled. In other words, the actual selection of the items for the sample is left to the interviewer’s discretion. This type of sampling is very convenient and is relatively inexpensive. But the samples so selected certainly do not possess the characteristic of random samples. Quota samples are essentially judgement samples and inferences drawn on their basis are not amenable to statistical treatment in a formal way.
There are 7 questions to complete.