Imagine we wanted to investigate whether a persons profession can predict

Imagine we wanted to investigate whether a persons

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12. Imagine we wanted to investigate whether a person’s profession can predict scores on a self-report psychopathy scale. We collected data from people in eight professions and a group of unemployed people. The eight professions were: bank traders, insurance brokers, health care professionals, business executives, volunteer workers, full-time mums, teachers, construction workers. The outcome was psychopathy score. How could we analyse these data? a. Regression only b. ANOVA or chi-square c. ANOVA only d. ANOVA or regression Ans: D 13. Imagine we wanted to investigate whether a person’s profession can predict scores on a self-report psychopathy scale. We collected data from people in eight different professions and a group of unemployed people. The eight professions were: bank traders, insurance brokers, health care professionals, business executives, volunteer workers, full-time mums, teachers, construction workers. The outcome was psychopathy score. If we wanted to analyse these data using regression, how many dummy variables would we need? 14. An experiment was done to look at whether different relaxation techniques could predict sleep quality better than nothing. A sample of 400 participants were randomly allocated to one of four groups: massage, hot bath, reading or nothing. For one month each participant received the same relaxation technique for 30 minutes before going to bed each night. A special device was attached to the participant’s wrist that recorded their quality of sleep, providing them with a score out of 100. The outcome was the average quality of sleep score over the course of the month. Which of the following tables displays the most appropriate coding scheme for analysing these data?
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Dummy Variable 1 Dummy Variable 2 Dummy Variable 3 Nothing100Reading000Hot bath010Massage 0 0 1 Dummy Variable 1 Dummy Variable 2 Dummy Variable 3Nothing110Reading001Hot bath010Massage 0 0 0 Dummy Variable 1 Dummy Variable 2 Dummy Variable 3 Nothing000Reading001Hot bath010Massage 1 0 0 Dummy Variable 1 Dummy Variable 2 Dummy Variable 3 Nothing301Reading11-3Hot bath 1 1 1 Massage1-3115. An experiment was done to look at whether different relaxation techniques could predict sleep quality better than nothing. A sample of 400 participants were randomly allocated to one of four groups: massage, hot bath, reading or nothing. For one month each participant received one of these relaxation techniques for 30 minutes before going to bed each night. A special device was attached to the participant’s wrist that recorded their quality of sleep, providing them with a score out of 100. The outcome was the average quality of sleep score over the course of the month. Which test could we use to analyse these data?
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