The process not needed in experimental researches is
| A. | observation |
| B. | controlling |
| C. | manipulation and replication |
| D. | reference collection |
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Option: D Explanation : Reference collection is not needed in experimental studies because a researcher relies only on his own results which may be different from the previous studies Click on Discuss to view users comments. |
A teacher encounters various problems during his professional experiences. He should
| A. | resign from his post in such situations |
| B. | do research on that problem and find a solution |
| C. | avoid the problematic situations |
| D. | take the help of the head of the institution |
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Option: B Explanation : It is but natural to face various problems in life and seeking solutions to these problems is a must. A true teacher always tries to get solution of his problem by doing formal or informil researches Click on Discuss to view users comments. |
A researcher selects a probability sample of 100 out of the total population. It is
| A. | a cluster sample |
| B. | a random sample |
| C. | a stratified sample |
| D. | a systematic sample |
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Option: B Explanation : In random sampling technique every number of the population has equal chance of being selected Click on Discuss to view users comments. |
Area (cluster) sampling technique is used when
| A. | population is scattered and large size of the sample is to be drawn |
| B. | population is heterogeneous |
| C. | long survey is needed |
| D. | (a) and (c) |
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Option: D Explanation : When long survey is being done and population is being scattered over a large area then researcher selects various groups from the whole area. The selection of these groups is based on the discretion of the researcher. Click on Discuss to view users comments. Shefali said: (5:27am on Thursday 11th January 2018)
Why can't it be when population is heterogeneous?Coz when population is not highly homogeneous and differs maybe area by area then?
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