CMN 102 UIUC EXAM 1 well answered graded A+ 2024/2025

CMN 102 UIUC EXAM 1Three main reasons scientists perform research - correct answer Explain, predict, make a difference Variable - correct answer any concepts that can have two or more values Relationship between variables - correct answer hypothesis OR research question Hypothesis - correct answer assumption, prediction, an educated guess based on prior knowledge Research Question - correct answer Not enough knowledge to make a guess, uncertain Cofounding variable - correct answer those that are not assessed but obscure the relationship between two measured variables - playing violent video games make people become violent Experimental Research - correct answer characterized as controlled test of cause-and-effect relationship between variables Independent variables - correct answer cause Dependent variables - correct answer effect/outcome R O1X O2 - correct answer O= measurements (survey) X=message R=random assignment