Exercise 6.3 Clinicians at a nursing home facility want to see if giving residents plants to tend to will help lower depression. To test this idea, each resident is randomly assigned to one of three groups: Group 1, Control group (no plant); Group 2, Bamboo; or Group 3, Cactus. Each plant comes with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, a 10-question instrument that renders a score between 1 and 100 (1 = low depression, 100 = high depression).

Data set: Ch 06 - Exercise 03A.sav Codebook Variable: group Definition: Plant group assignment Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: mood Definition: Depression level Type: Continuous (1 = low depression, 100 = high depression