Probability and Sampling

Front

What is a random sample?

Back

A sample in which every person, object, or event has an equal chance of being selected.

Front

Is the sample of customers interviewed by Elise likely to be biased?

Back

Yes, because she only interviewed those who agreed to talk.

Front

What do biased questions do?

Back

They lead people to answer in a particular way.

Front

What is a biased sample in the context of a survey?

Back

A sample that does not accurately represent the population.

Front

What is the population in a survey?

Back

The entire group of objects or individuals considered for a survey.

Front

What is a sample in statistics?

Back

A subset of the population selected for the survey.

Front

What is the difference between a random sample and a biased sample?

Back

A random sample gives every individual an equal chance of selection, while a biased sample does not.

Front

Why is it important to avoid biased questions in surveys?

Back

To ensure that the responses accurately reflect the opinions of the population.

Front

What is an example of a biased question?

Back

"Don't you think our store has the best prices?"

Front

What is stratified sampling?

Back

A method where the population is divided into subgroups and random samples are taken from each.