Randomization is the preferred method for controlling extraneous variables.
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Q7: Variables that measure the effect of the
Q7: Causality refers to when the occurrence of
Q8: Validity takes place when the occurrence of
Q9: Dependent variables are variables that are manipulated
Q10: Internal validity refers to whether the cause-and-effect
Q11: Concomitant variation occurs when the presumed cause
Q14: Consumers are good examples of dependent variables.
Q15: External validity refers to whether the manipulation
Q17: Variables,other than the independent variables,that influence the
Q18: In an after-the-fact examination of a situation,we
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