Population and Samples

Front

What is a sample?

Back

A sample is a part of a group being surveyed.

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 random sample?

Back

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

Front

What is the difference between a population and a sample?

Back

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

Front

What is a biased sample?

Back

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

Front

How can you obtain an unbiased sample?

Back

An unbiased sample can be obtained by using random selection methods.

Front

What is the purpose of sampling in research?

Back

The purpose of sampling is to gather data and make inferences about a population without surveying every individual.

Front

If a manager samples every fifth person in line, what type of sampling is this?

Back

This is an example of systematic sampling.

Front

What is a representative sample?

Back

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

Front

How do you calculate the expected number of mispriced items in a store?

Back

To calculate the expected number, use the proportion of mispriced items found in the sample and apply it to the total population.