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31) What type of research design should a researcher use if he or she wishes to determine the effect of a change in price on the sales of a particular brand? A) causal B) descriptive C) longitudinal D) exploratory E) discontinuous 32) In an experiment, over which type of variable does a researcher have control and wish to manipulate? A) dependent variable B) extraneous variable C) independent variable D) complex variable E) control variable 33) When a variable exerts influence on the dependent variable and is not an independent variable, we refer to it as a(n): A) influential variable B) extraneous variable C) affective variable D) complex variable E) effective variable 34) An experiment is defined as: A) something men and/or women in white coats do. B) manipulating an independent variable to see how it affects a dependent variable, while also controlling for the effects of additional complex variables. C) manipulating a dependent variable to see how it affects an independent variable, while also controlling for the effects of additional complex variables. D) holding all variables constant to observe any effects of one variable over another over time. E) manipulating an independent variable to see how it affects a dependent variable, while also controlling for the effects of additional extraneous variables. 35) An experimental design is a procedure for ensuring that: A) the change in the dependent variable may be solely attributed to the change in the independent variable. B) the change in the independent variable may be solely attributed to the change in the complex variable. C) the change in the dependent variable may be solely attributed to the change in the extraneous variable. D) any and all effects on all experimental values are measured. E) the manipulation made on the complex variable is measured accurately. 36) Which of the following symbols represents the manipulation of an independent variable in an experimental design? A) O B) X C) R D) I E) E 37) Which of the following symbols represents the measurement of the dependent variable? A) D B) X C) O D) R E) Y 38) Which of the following symbols represents the random assignment of subjects? A) S B) R C) O D) X E) A 39) Which of the following research designs would be considered a quasi-experimental design as discussed in the textbook? A) Posttest design B) One-Group, After-Before design C) Before-After with Control Group design D) Pretest design E) After-Only design 40) Which of the following designs represents the Before-After with Control Group design? A) E = O1 – O2 B) E = X – O C) E = (O1 – O2) + (O3 – O4) D) E = E + X + O E) E = (O2 – O1) + (O4 – O3)

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