Samples - Biased vs. Unbiased

Front

What is a biased sample?

Back

A biased sample is one that does not accurately represent the population, leading to skewed results.

Front

What is an unbiased sample?

Back

An unbiased sample is one that accurately represents the population, giving every individual an equal chance of being selected.

Front

Define systematic sampling.

Back

Systematic sampling is a method where you select every nth individual from a list or group.

Front

What is random sampling?

Back

Random sampling is a technique where every individual in the population has an equal chance of being selected.

Front

What is convenience sampling?

Back

Convenience sampling involves selecting individuals who are easiest to reach, which may lead to biased results.

Front

What is voluntary response sampling?

Back

Voluntary response sampling occurs when individuals choose to participate in a survey, often leading to bias.

Front

Why is random sampling important?

Back

Random sampling is important because it helps ensure that the sample is representative of the population, reducing bias.

Front

What is the difference between biased and unbiased samples?

Back

Biased samples do not represent the population accurately, while unbiased samples do.

Front

Give an example of systematic sampling.

Back

An example of systematic sampling is surveying every 10th person on a list of attendees.

Front

What is the purpose of surveying a random sample?

Back

The purpose is to gather data that reflects the opinions or behaviors of the entire population.