| Tag | Value |
|---|---|
| file | Inferential_Statistics_eur-inferential_statistics-252-en_eur-inferential_statistics-252-en |
| name | eur-inferential_statistics-252-en |
| section | Inferential Statistics/Regression/R squared, Inferential Statistics/Regression/Multiple linear regression/R squared change |
| type | num |
| solution | 0.144 |
| tolerance | 0 |
| Type | Performing analysis |
| Program | SPSS |
| Language | English |
| Level | Statistical Literacy |
As you get older, going out becomes more of an exhaustion… the mind is willing, but the body is weak. To be able to advise the aging party-goers, a researcher drew a sample out of all the people visiting a certain nightclub in Rotterdam. The participants in the study were asked to report the amount of minutes they napped before going out and to report the amount of hours they spend partying that night. In addition, they had to fill in a questionnaire that quantified their natural need for sleep, and they needed to indicate whether their friends considered them to be a party-animal or a stay-at-home type of person [Group, where stay-at-home = 0 and party animal = 1].
Add a variable NeedSleep to a model that only has MinutesNap as a predictor variable to predict the amount of hours someone spent partying [HoursPartying]. What is the difference in explained variance between a model with just MinutesNap and a model with both MinutesNap and NeedSleep? (3 decimals)
The correct answer is 0.144.