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hw2 - 2 For the data gathered in class Do this exercise...

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Business and Economics Statistics I Homework #2 Due September 11 1. A social worker at the county prison, Ray N. Force, is trying to create a more positive social climate within the prison. He decides to use operant conditioning to increase the frequency of prisoners saying thank you for positive actions by others. He uses cigarettes as reinforcers for 10 prisoners in Wing A and chef’s special oat bran muffins for the 20 prisoners in Wing B. After one week on a 100% reinforcement schedule he count the number of appropriately emitted thank-yous during one day. Group A: 2, 7, 8, 5, 6, 1, 7, 6, 6, 2 Group B: 2, 6, 2, 7, 6, 5, 1, 6, 8, 7, 2, 7, 8, 2, 6, 6, 5, 6, 1, 7 a. What is the mean for each group? b. What is the variation and variance for each group? c. If the variation and variance are both measures of variability, how do you explain the groups being different in variation, but the same in variance.
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Unformatted text preview: 2. For the data gathered in class: Do this exercise twice, once with your group and once with one of the other groups. a. Compute the grand mean of the time values by dominant and non-dominant hand. b. Compute the total amount of variation. c. Compute the variation, variance, and standard deviation of the times for the dominant hand and then again for the non dominant hand. d. What is the unaccountable variation and how much variation is accountable by knowing which hand was used? e. Calculate eta squared f. What other independent variables might account for some of the variability? Explain. Your group Second group Grand mean SST SSacct SSunacct Eta square Variances for dominant hand and for non-dominant hand Standard Deviations for dominant and non-dominant Variations for dominant and non-dominant...
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