KINE 2049 Chapter Notes - Chapter 1-8: Repeated Measures Design, Random Assignment, Statistical Power
19 Feb 2016
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In an example of effect of bicycling on weight loss: iv is the exercise program, dv is outcome -> body weight. Adding 2 iv allows us to better access the effects of bike rides and weight. Adding more iv gives more range to compare the results. By identifying as many control variables and fixing them throughout the experiment can. Extraneous variation that may affect results are controlled or eliminated help causal factor to be examined. Experiments in sport and exercise sciences frequently have two or more iv. It is more efficient to have more independent variables to make use of time, money, subjects, and equipment. More iv also simulate real world better than experiments with one variable. Most important reason is to allow researchers to examine how independent variables act in combination: how independent variables combine their effects on dv (called interaction)
