Discuss how, or when random sampling methods are used, sampling bias may be introduced by such factors as when, where, and by whom a sample is selected 2. Discuss the importance or
Ford and Torok (2008) found that motivational signs were effective in increasing physical activity on a college campus. Signs such as “Step up to a healthier lifestyle” and “An average person burns 10 calories a minute walk- ing up the stairs” were posted by the elevators and stairs in a college building. Identify the dependent variable and the independent variable for this study
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