Question

A research group is interested in gauging perceptions about airline food quality among first class passengers. ​Specifically, they wish to determine the percentage of business travelers In the United States that believe airline food quality has not improved. They listed the members of the airline's frequent flyer club in alphabetical order and took every tenth member until they succeeded in contacting 170 members. What kind of sampling method have they​used?

a. MULTISTAGE SAMPLING

b. CLUSTER SAMPLING

c. STRATIFIED RANDOM SAMPLING

d. SYSTEMATIC SAMPLING

Answer 1

The research group used systematic sampling to gauge perceptions about airline food quality among first class passengers by listing frequent flyer club members in order and selecting every tenth member to contact.

Step-by-step explanation:

The sampling method used by the research group to determine perceptions about airline food quality among first class passengers is known as systematic sampling. This method involves listing the members of the population in some order, selecting a starting point at random, and then selecting every kth individual from the list. In the case described, they listed the members of the airline's frequent flyer club in alphabetical order and then selected every tenth member until they contacted 170 members. This procedure is a hallmark of systematic sampling. It is different from other types of sampling like multistage sampling, where multiple levels of random sampling are used, cluster sampling, where the population is divided into clusters and a random sample of clusters is then chosen, or stratified random sampling, where the population is divided into strata, and a random sample is taken from each stratum.

Answer 2

d. SYSTEMATIC SAMPLING

Step-by-step explanation:

Samples may be classified as:

Convenient: Sample drawn from a conveniently available pool.

Random: Basically, put all the options into a hat and drawn some of them.

Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.

Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.

In this question:

Took every 10th member, that is, every kth member, which is systematic.

The correct answer is given by option d.