Questions come from the Bluebook question bank.
- For each data category, the following bars are shown:
- no leave
- 2–4 days leave
- 1–5 weeks leave
- The data for the 3 categories are as follows:
- First test administration:
- no leave: 546
- 2–4 days leave: 455
- 1–5 weeks leave: 545
- Second test administration:
- no leave: 470
- 2–4 days leave: 575
- 1–5 weeks leave: 518
- Third test administration:
- no leave: 500
- 2–4 days leave: 510
- 1–5 weeks leave: 480
- First test administration:
To investigate potential cognitive benefits of taking leave from work, psychologist Jan Packer and colleagues conducted a six-month study of Australian university staff members who took no leave from work during the study, took 2–4 days of leave, or took 1–5 weeks of leave. Tests of attentiveness were administered to participants three times during the study: at random for the no-leave staff, and for the rest, one week before their leave, one week following their return to work, and one week after the second test administration. After analyzing the results, the researchers concluded that longer leave times might not confer a greater cognitive benefit than shorter leave times do.
Which choice best describes data from the graph that support the researchers’ conclusion?