7th Grade: Populations and Samples

Front

What is a sample in statistics?

Back

A sample is a subset of individuals or objects selected from a larger population used to represent that population.

Front

What is a population in statistics?

Back

A population is the entire group of individuals or objects that is the subject of a statistical study.

Front

What is a representative sample?

Back

A representative sample accurately reflects the characteristics of the population from which it is drawn.

Front

What is a random sample?

Back

A random sample is a subset of a population where each member has an equal chance of being selected.

Front

Why is it important to have a representative sample?

Back

A representative sample ensures that the results of a study can be generalized to the entire population.

Front

What is the difference between a sample and a population?

Back

A sample is a smaller group selected from a population, while a population includes all members of a specified group.

Front

What does it mean to stratify a sample?

Back

Stratifying a sample means dividing the population into subgroups and then taking a sample from each subgroup.

Front

What is sampling bias?

Back

Sampling bias occurs when certain members of a population are more likely to be selected than others, leading to an unrepresentative sample.

Front

What is the purpose of conducting surveys?

Back

Surveys are conducted to gather information and insights from a sample to make inferences about the larger population.

Front

How can you ensure a sample is random?

Back

To ensure a sample is random, use methods like random number generators or drawing names from a hat.