Population Inferences

Front

What is a population in statistics?

Back

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

Front

What is a sample in statistics?

Back

A sample is a subset of the population that is selected for the purpose of conducting a study.

Front

What does it mean for a sample to be unbiased?

Back

An unbiased sample accurately represents the population from which it is drawn, without favoritism or prejudice.

Front

What is the difference between a sample and a population?

Back

Samples only consider a portion of the population being studied.

Front

How can you determine if a study is biased?

Back

A study is biased if the sample does not accurately represent the population.

Front

What is a representative sample?

Back

A representative sample is a sample that reflects the characteristics of the population as a whole.

Front

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

Back

Front

If 15 out of 20 students like a show, how many out of 100 would you expect to like it?

Back

75 students would be expected to like the show.

Front

What is the formula for calculating proportions?

Back

Front

What is sampling error?

Back

Sampling error is the difference between the sample statistic and the actual population parameter.