A Researcher Studies the Effect of Exercise on Stamina

question 74

Multiple Choice

A researcher studies the effect of exercise on stamina.Participants are randomly assigned to be in an exercise or no-exercise group for 12 weeks.Stamina is then measured by how long participants can walk comfortably on a treadmill.In this study, the dependent variable is:

• A)the number of minutes on the treadmill.
• B)the exercise program.
• C)heart rate during the exercise program.
• D)the 12-week duration of the exercise program.

Identify the role of differences (within and between groups) in statistical analysis.

Calculate SSBG (Sum of Squares Between Groups) based on given values.

Relate F-ratios to research hypotheses.

Interpret the degrees of freedom (df) in the context of ANOVA.

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