Unit 8 - Population and Sampling

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger set (population) in such a way that every individual 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 subset of the population used to represent the group.

Front

What is sampling bias?

Back

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

Front

What is a stratified sample?

Back

A stratified sample is a sampling method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

Front

What is a convenience sample?

Back

A convenience sample is a non-random sample that is taken from a group that is easily accessible, which may lead to biased results.

Front

What is the purpose of a survey in research?

Back

The purpose of a survey is to collect data from a predefined group to gain insights, opinions, or information about a specific topic.

Front

How do you calculate the population proportion?

Back

Population proportion is calculated by dividing the number of individuals in a specific category by the total number of individuals in the population.

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 the significance of sample size in research?

Back

Larger sample sizes generally lead to more reliable and valid results, reducing the margin of error and increasing the confidence in the findings.

Front

What is a systematic sample?

Back

A systematic sample is obtained by selecting every nth individual from a list of the population.