Question

General Motors wants to administer a satisfaction survey to its current customers. Using their customer database, the company randomly selects 30 customers and asks them about their level of satisfaction with the company. What type of sampling is used? Cluster Convenience Simple random Systematic Stratified

Answer 1

Answer: Simple random

Explanation:

Since , the company randomly selects customers and asks them about their level of satisfaction with the company.

So the chances for each customer to get selected are equal.

This technique of sampling is known as simple random sampling .

Definition:

• A simple random sampling is a sampling technique in which the researcher randomly selects individuals from the whole population of interest for his sample.

Here , the probability for each individual to get selected is equal as
`(1)/(N)` , where N = Population size.

In the rest of sampling method (convenience , systematic , stratified and cluster) , the individuals in the population do not have equal chances to get selected. .