Question

An airline is interested in measuring the customer satisfaction of its passengers in all of its domestic flights on a certain day. The data analysis team took all 22 domestic flights of that day that took off from a certain airport. They randomly selected 25 passengers from each flight to form a sample of 550 passengers. What sampling technique did the data analysis team use?

a) Stratified sampling
b) Simple random sampling
c) Quota sampling
d) Systematic sampling

Answer 1

The data analysis team used a) stratified sampling by dividing flights into strata and selecting passengers randomly from each.

Step-by-step explanation:

The sampling technique used by the data analysis team for measuring customer satisfaction of passengers on all domestic flights from a certain airport was stratified sampling. This method involves dividing the population into separate groups, known as strata, and then randomly selecting a sample from each of these strata. In this case, each of the 22 domestic flights represents a stratum, and from each flight, 25 passengers were randomized selected to be part of the sample.