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B. Rating C. Sorting D. A choice technique 25 Pre-testing involves administering a sample of a questionnaire to a group of respondents before having them fill out the complete questionnaire. 26 The order of questions in a survey is a potential source of bias. 27 Before a questionnaire can be constructed, the researcher must consider: A. Analytical techniques and data analysis to be used. B. The communication medium of data collection C. The type of information needed. D. All of the above. E. None of the above. 28 A hypothesis is a proposition formulated for empirical testing; a tentative descriptive statement that describes the relationship between two or more variables. 29 If graphic representations of data are well done, they should not need to be interpreted in the text. 30 If you wanted to present a great deal of numerical information, you might decide to use a: A. Pie chart. B. Table.