Unit 8 - Population and Sampling

Front

What is a population in statistics?

Back

The entire group studied in a statistical analysis.

Front

What is a sample in statistics?

Back

A subset of the population selected for analysis.

Front

How do you calculate the population proportion?

Back

Divide the number of favorable outcomes by the total number of outcomes.

Front

What is a biased sample?

Back

A sample that does not accurately represent the population.

Front

What is an unbiased sample?

Back

A sample that accurately represents the population.

Front

What is random sampling?

Back

A method of selecting a sample in which each member of the population has an equal chance of being chosen.

Front

What is stratified sampling?

Back

A sampling method that involves dividing the population into subgroups and randomly selecting from each subgroup.

Front

What is the purpose of sampling in statistics?

Back

To make inferences about a population based on a smaller group.

Front

What is the formula for estimating population size based on sample data?

Back

Estimated population = (Sample proportion) x (Total population size).

Front

What is a sampling frame?

Back

A list of all the members of the population from which a sample is drawn.