An Open Access Journal
Table 3 Technical data sheet for the methodology used in this research
Parameter | Description | |
|---|---|---|
Type of survey | Self-administered face-to-face | |
Place carried out | City of Madrid | |
Universe or population | Residents in City of Madrid + Visitors | |
Size of sample | 500 (250 at the underground, 250 at the bus) | |
Sample error | 6.4% | |
Confidence level | 95% | |
Sample method | Random stratification | |
Date of fieldwork | 17–23 December 2013, 25 January 2014 | |
Average time per person surveyed | 8 min | |
Negativity rate | Underground: 16% | Bus: 12% |
Non-response rate | Underground: 1.99% | Bus: 1.87% |
Analysis technique | Statistical analysis: Univariant_Bivariant (correlation) Predictive: analysis: Regression Model | |
Computer program used for data treatment | IBM SPSS Statistics 20 | |