A psychologist operating a group home for delinquent adolescents needs to show that the home is successful at reducing delinquency. He samples 10 adolescents living in their own homes who have been identified by the police as having problems, 10 similar adolescents living in foster homes, and 10 adolescents living in the group home. As an indicator variable he uses truancy (number of days truant in the past semester), which is readily obtained from school records. On the basis of the following data, draw the appropriate conclusions:
Answer to relevant QuestionsI mentioned the fact that variability is a concept that will run throughout the book. I said that you need only one cow to find out how many legs cows have, whereas you need many more to estimate their average milk ...As an alternative method of evaluating a group home, suppose we take 12 adolescents who have been declared delinquent. We take the number of days truant during each of three time periods: (1) the month before they are placed ...Repeat the analysis in Exercise 20.2 using the normal approximation. In Exercise 20.2 Create a forest plot of these data. Mazzucchelli, Kane, and Rees (2010) examined studies of behavioral activation as a way to improve feelings of subjective well-being. (They defined behavioral activation as “intentional ...Apply a meta-analysis to these data and draw the appropriate conclusions.
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