Homework/Lab Assignment Five A clinical psychologist has developed a new talk therapy treatment for depression. She has enlisted 20 volunteers from the community who are clinically depressed to take part in her new study. Half of her participants received the antidepressant drug fluoxetine (Prozac) and the other half will receive no antidepressant drug. Additionally, for the group who receive the antidepressant drug, five participants received the new talk therapy treatment and five participants were placed on a waitlist for talk therapy. For the other 10 participants who receive no antidepressant drug, five participants received the new talk therapy treatment and five participants were place on a waitlist for talk therapy. The following is a list of the participants’ self-report depression scores (lower scores equal lower depression) after 12 weeks of treatment: Participant 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Drug No Prozac No Prozac No Prozac No Prozac No Prozac No Prozac No Prozac No Prozac No Prozac No Prozac Prozac Prozac Prozac Prozac Prozac Prozac Prozac Prozac Prozac Prozac Therapy Waitlist Waitlist Waitlist Waitlist Waitlist New Therapy New Therapy New Therapy New Therapy New Therapy Waitlist Waitlist Waitlist Waitlist Waitlist New Therapy New Therapy New Therapy New Therapy New Therapy D.V. 29 33 29 37 25 58 31 27 12 57 14 18 62 61 24 11 12 12 9 6 Your assignment requires the following: 1. (2 pts.) What is the mean for each of the four groups? 2. (2 pts.) What is the median for each of the four groups? 3. (2 pts.) What is the mode for each of the four groups? 4. (2 pts.) What is the standard deviation for each of the four groups? 5. (2 pts.) What is the variance for each of the four groups? 6. (2 pts.) What is the range for each of the four groups? 7. (2 pts.) What is the population? 8. (2 pts.) What is/are the independent variable(s)? 9. (2 pts.) What is the conceptual aspect of the dependent variable? 10. (3 pts.) What is the measured aspect of the dependent variable? 11. (2 pts.) Is this a Between-Subjects, Within-Subjects Design, or Mixed Design? 12. (3 pts.) What type of Inferential Test should be used (please be very specific)? 13. (6 pts.) What are the exact p-values (taken to 3 decimals each) (be specific: there are three of them)? 14. (3 pts.) What are the exact Inferential Values (taken to 3 decimals each) (be specific: there are three of them) and are they t-values, or F-values, or r-values, or X²-values? 15. (6 pts.) Were there Main Effects or No Main Effects, or a Significant Interaction or No Significant Interaction (be specific for which variables had Main Effects, No Main Effects, Significant Interactions, No Significant Interactions) (be specific: there are three of them)? 16. (6 pts.) Were the null hypotheses rejected or did we fail to reject (be specific: there are three of them)? 17. (3 pts.) If significance is found, will it be necessary to perform a post-hoc test to determine where the significance occurred (yes or no)? • This assignment is Due by: Tuesday, April 11 at 8:00am in Canvas. Late work will not be accepted. This assignment must be turned in using the following format with your answers in bold (including the point(s) value). Example: 1. (2 pt.) Now provide your answer in bold 2. (2 pt.) Now provide your answer in bold 3. (2 pt.) Now provide your answer in bold 4. (2 pt.) Now provide your answer in bold 5. (2 pt.) Now provide your answer in bold 6. (2 pt.) Now provide your answer in bold 7. (2 pts.) Now provide your answer in bold 8. (2 pts.) Now provide your answer in bold 9. (2 pts.) Now provide your answer in bold 10. (3 pts.) Now provide your answer in bold 11. (2 pts.) Now provide your answer in bold 12. (3 pts.) Now provide your answer in bold 13. (6 pts.) Now provide your answer in bold 14. (3 pts.) Now provide your answer in bold 15. (6 pts.) Now provide your answer in bold 16. (6 pts.) Now provide your answer in bold 17. (3 pts.) Now provide your answer in bold • All homework submissions must be in this format and turned in as a PDF file in Canvas by the due date or it will receive zero points. • All answers to questions in this assignment must be shown in this format or will be marked incorrect and receive a score of zero points. • Emailed assignments will not be graded and will receive zero points. • All answers involving numbers must be rounded to two decimal places unless otherwise stated or will be marked incorrect and receive zero points. • This assignment should be completed by each individual student (please seek no help from your classmates).
