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

Q. Sampling is the ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ for obtaining a sample from the sampling frame.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is conducted with the purpose of gaining a better insight into a problem.

Q. Stratified sampling is ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ sampling.

Q. Descriptive research design is ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

Q. Probability sampling means‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ research design is used to study or estimate the proportion of people in a particular population who hold certain specific attitudes.

Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ is empirical & practical.

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

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