An example of a good technique for getting a random sample of the population would be to ask a
question by radio and have the listeners phone in with an answer.

Question

Quizplus · Accepted Answer

This is not a good technique for getting a random sample of the population as it only includes those who listen to the radio and are willing to call in. This could potentially exclude large portions of the population and introduce bias into the sample. A better technique would be to use a random sampling method such as selecting names from a phone directory or using a random number generator to select participants from a list of possible candidates.

An Example of a Good Technique for Getting a Random