Q: Which of the following statements about population, sample, parameters and statistics are correct?
(A) A population consists of all units about which the researcher wishes to draw conclusions;
(B) A statistic is a numerical characteristic calculated from a sample;
(C) A parameter is a numerical characteristic of a population;
(D) In practice, population parameters are often estimated using sample statistics;
(E) A census study involves collecting data from every unit in the population;
(F) Once a census is conducted, there is no need to worry about measurement error;
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Q: Which of the following statements about research hypotheses are correct?
(A) A hypothesis is a tentative answer to a research problem that can be empirically tested;
(B) A good hypothesis should be stated in a form that is clear, specific and testable;
(C) A hypothesis is always proved true by a single research study;
(D) Hypotheses help in determining the research design and data collection procedures;
(E) Hypotheses are compulsory for all qualitative exploratory studies;
Choose the correct answer from the options given below:
Q: Which of the following statements about the nature of research are correct?
(A) Research is a systematic and objective investigation of a problem;
(B) Research always aims at immediate commercial benefits for the researcher;
(C) Research involves collection, analysis and interpretation of data;
(D) Research necessarily requires laboratory experimentation in physical settings;
(E) Research seeks to generate or refine knowledge through logical reasoning;
Choose the correct answer from the options given below:

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