Extra Credit – No Penalty for Trying If a researcher has a n…
Extra Credit – No Penalty for Trying If a researcher has a nominal/categorical variable like Sport Participated In (Swimming, Basketball, Track, Soccer), what is meant when a researcher creates “dummy variables” to represent this variable? What is a dummy variable?
Read DetailsA researcher was interested in comparing 3 group conditions:…
A researcher was interested in comparing 3 group conditions: Meditation, Progressive Muscle Relaxation PMR), and a Control condition on heart rate. 28 freshmen undergraduates from USF were randomly selected. From these 28 students, 13 were randomized to the Control Condition, 8 were randomly assigned to Meditation, and 7 were randomly assigned to Progressive Muscle Relaxation. Using a .05 level of significance is there a statistically significant difference between PMR and Meditation?
Read DetailsExtra Credit – No Penalty for Trying Suppose a researcher co…
Extra Credit – No Penalty for Trying Suppose a researcher compares 4 groups (Freshmen, Sophomores, Juniors, Seniors) on the average number of steps taken per day, and finds an overall significant F-ratio. What is the logic of using post hoc methods like the Tukey method or Bonferroni method in making pairwise comparisons (why are these special methods needed)?
Read DetailsA researcher was interested in comparing 3 group conditions:…
A researcher was interested in comparing 3 group conditions: Meditation, Progressive Relaxation, and a Control condition on heart rate. 28 freshmen undergraduates from USF were randomly selected. From these 28 students, 13 were randomized to the Control Condition, 8 were randomly assigned to Meditation, and 7 were randomly assigned to Progressive Relaxation. What statistical technique would be used in this study?
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