Populations and Samples Practice

Front

What is a population in statistics?

Back

A population is the entire group of individuals or items that we want to learn about.

Front

What is a sample in statistics?

Back

A sample is a part of a population that is being surveyed or studied.

Front

What is a representative sample?

Back

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

Front

What does it mean to survey a population?

Back

To survey a population means to collect data from a group to understand their opinions, behaviors, or characteristics.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a defined group, while a sample includes only a subset of that group.

Front

How do you calculate the expected number of individuals in a population based on a sample?

Back

Multiply the proportion found in the sample by the total number in the population.

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

Front

What is a statistical question?

Back

A statistical question anticipates variability in the data and can be answered by collecting data.

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What is a non-statistical question?

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A non-statistical question expects a single answer and does not involve variability.

Front

Why is it important to have a large sample size?

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A larger sample size reduces the margin of error and increases the reliability of the results.