An investigator, Dr. Aris, wanted to monitor the sleep architecture of a participant who reported daytime fatigue. She tracked the participant's daily light sleep and deep sleep duration (in hours) over the course of one week.
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | |
|---|---|---|---|---|---|---|---|
| Light sleep duration (hours) | 5.5 | 6.0 | 5.2 | 5.8 | 6.5 | 4.8 | 5.0 |
| Deep sleep duration (hours) | 1.4 | 1.8 | 1.1 | 2.0 | 0.9 | 2.5 | 1.7 |
Calculate the mean number of hours of deep sleep for this week. Show your workings.
Give your answer to two significant figures.
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.