Question

Eleanor Qwan is a college student who has started a non-profit organization to provide support and companionship for elderly shut-ins. She is now at the stage of recruiting volunteers. She envisions three major tasks to be performed by volunteers: visitation, derical work, and advertisement. She is interested in whether some of these tasks would be more attractive to volunteers than others, and she is also interested in whether males and females feel differently. She randomly selected an equal number of adult males and females. She divided the males at random into three groups of equal size. For each task, she chose a different group of males and asked each male in the group the number of hours per month he would volunteer at the task. She did the same for the females. After recording the replies, she computed the group mean for each of the six groups. Shown below are four possible graphs displaying these group means. Answer the questions below about these graphs. Graph 1 Graph 2 2.3.1 250 23 . 225 Male Female . . 200 13 oFemale Male 50 Visitation Clerical Advertisement Visitation Clerical Advertisement work work

Answer 1

1. Which graphs show that the two genders had different overall means?

Answer: Graph 1, Graph 2, Graph 3, Graph 4

2.Which graph show that at least one task had a different overall mean from the others?

Answer: Graph 1, Graph 2

3.Which graph show evidence of an interaction between two factor gender and task?

Answer: Graph 3