4.1 Practice

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What is a sample in statistics?

Back

A sample is a subset of a population used to represent the entire group.

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What is a population in statistics?

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

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What is an observational study?

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

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What is an experiment in research?

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

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What is the difference between a sample and a population?

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

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What does it mean to compare groups in a study?

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Comparing groups involves analyzing differences or similarities between two or more groups based on certain characteristics or outcomes.

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What is the significance of using a control group in experiments?

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A control group helps to isolate the effect of the treatment by providing a baseline for comparison.

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What is a variable in research?

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A variable is any factor, trait, or condition that can exist in differing amounts or types.

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What is the purpose of a survey in research?

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A survey is used to gather information from a group of people to understand their opinions, behaviors, or characteristics.

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What is a dependent variable?

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A dependent variable is the outcome that is measured in an experiment, which is affected by changes in the independent variable.