Population, Samples & Types of Studies

Front

What is a sample in research?

Back

A sample is a part of a group being surveyed.

Front

What is a population in research?

Back

A population is the entire group of individuals or instances about whom we hope to learn.

Front

What is a random sample?

Back

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

Front

What is an observational study?

Back

An observational study is a type of research where the researcher observes and records behavior without manipulating any variables.

Front

What is an experiment in research?

Back

An experiment is a study in which the researcher manipulates one or more variables to determine their effect on another variable.

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 difference between a sample and a population?

Back

A sample is a subset of a population, while a population includes all members of a specified group.

Front

What is the purpose of random assignment in experiments?

Back

Random assignment helps ensure that each participant has an equal chance of being placed in any group, reducing bias.

Front

What is the significance of control groups in experiments?

Back

Control groups are used to compare against experimental groups to determine the effect of the independent variable.

Front

What is a survey in research?

Back

A survey is a method of collecting data by asking questions to a group of people.