Sampling Methods

Front

What is the purpose of randomly selecting samples?

Back

To reduce bias in the results.

Front

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

Back

Yes, because it only includes customers who agreed to be interviewed.

Front

Why is the sample of English teachers biased in the juice preference survey?

Back

Because the sample didn't include students, who are the actual consumers.

Front

What type of sampling method did Marianne use when selecting students from each class?

Back

Stratified Sampling.

Front

Which statement about stratified sampling is false?

Back

Stratified sampling has nothing in common with random or systematic sampling.

Front

What is convenience sampling?

Back

A sampling method where samples are taken from a group that is easily accessible.

Front

What is response bias?

Back

A tendency for respondents to answer questions inaccurately or falsely.

Front

What is voluntary response sampling?

Back

A sampling method where individuals choose to participate, often leading to bias.

Front

What is systematic sampling?

Back

A method where samples are selected using a fixed, periodic interval.

Front

What is the difference between random sampling and stratified sampling?

Back

Random sampling selects individuals randomly from the entire population, while stratified sampling divides the population into subgroups and samples from each.