Understanding Sampling Methods

What is a key characteristic of a simple random sample?

• It selects every 10th person.

• It is chosen based on convenience.

• It involves only volunteers.

• Each member of the population has an equal chance of being selected.

Which of the following is an example of systematic random sampling?

• Selecting students from a single classroom.

• Surveying every 5th person entering a theater.

• Asking for volunteers to participate in a survey.

• Choosing names from a hat.

Why is a convenient sample considered biased?

• It uses a random selection process.

• It is not representative of the entire population.

• It includes only volunteers.

• It involves systematic intervals.

What is a voluntary response sample?

• A sample where participants are chosen based on convenience.

• A sample where participants are selected randomly.

• A sample where every 10th person is selected.

• A sample where only those who choose to participate are included.

In the example of a random sample of students preferring music, why is the conclusion valid?

• Because it was a convenient sample.

• Because it was a systematic random sample.

• Because it was a voluntary response sample.

• Because it was a simple random sample.

Why is the conclusion about music store customers' leisure activities invalid?

• Because it was a simple random sample.

• Because it was a systematic random sample.

• Because it was a convenient sample.

• Because it was a voluntary response sample.

What makes the radio station's election prediction invalid?

• It was based on a systematic random sample.

• It was based on a voluntary response sample.

• It was based on a simple random sample.

• It was based on a convenient sample.

How can unbiased sampling methods be used to make predictions?

• By selecting samples based on convenience.

• By asking for volunteers to participate.

• By applying mathematical calculations to unbiased samples.

• By using biased samples to generalize.

In the example of ordering jeans, what is the first step in making a prediction?

• Calculate the probability of each type of pants.

• Ask for volunteers to express their preferences.

• Determine the total number of pants ordered.

• Select a convenient sample.

Why is Zach's survey of golf course preferences considered valid?

• Because it was a systematic random sample.

• Because it was a simple random sample.

• Because it was a voluntary response sample.

• Because it was a convenient sample.