3.2. Sampling and survey procedure
The sample was taken from the passengers of an international airline that flies from Istanbul Ataturk International Airport. The airline volunteered to take part in the study and has direct flight routes to five continents and is well known in the international airline industry. The survey was administered over 2 weeks. To make the sample more representative, the survey procedure was performed on three different routes based on cluster sampling: one each to Europe, the Far East, and North America. The airline preferred to conduct the survey on board during the flight. Questionnaires were distributed to the passengers and collected in the last hour of the flight. Participation was voluntary. The sample size was 385 to represent the population (more than 10 million passengers annually), with a 95% confidence level and a 5% error margin (DeVaus, 2000). A thousand questionnaires were distributed with a response rate of 32%. However, the actual response rate was 29.8% with a 5.7% error margin.
3.2. Sampling and survey procedureThe sample was taken from the passengers of an international airline that flies from Istanbul Ataturk International Airport. The airline volunteered to take part in the study and has direct flight routes to five continents and is well known in the international airline industry. The survey was administered over 2 weeks. To make the sample more representative, the survey procedure was performed on three different routes based on cluster sampling: one each to Europe, the Far East, and North America. The airline preferred to conduct the survey on board during the flight. Questionnaires were distributed to the passengers and collected in the last hour of the flight. Participation was voluntary. The sample size was 385 to represent the population (more than 10 million passengers annually), with a 95% confidence level and a 5% error margin (DeVaus, 2000). A thousand questionnaires were distributed with a response rate of 32%. However, the actual response rate was 29.8% with a 5.7% error margin.
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