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Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is essential for the researchers to acquire & familiarize himself with various tools of research.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ sampling is a non‐probability sampling.

Q. (‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐) study is to learn who, what, when, where & how of a topic.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ sampling is a non‐probability sampling.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ studies involve the collection of data from a sample at different points in time.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is obtained by selecting a convenient population.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is of great use when a researcher has only a vague idea of the problem.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐ is the procedure for forming knowledge by collecting observation under controlled condition.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is a verbal method of securing data in the field of surveys.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐tries to correlate the dependent variables with the independent variables.