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Independent and Dependent Variables Quiz

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Independent and Dependent Variables Quiz

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Questions and Answers

Which of the following best defines an independent variable?

A variable that is manipulated or varied in an experimental study (correct)

A variable that is influenced by other variables in a study

A variable that is measured in a study

A variable that is used to estimate changes in other variables

What are independent variables also called?

Confounding variables

Dependent variables

Experimental variables (correct)

Control variables

Which of the following is NOT an example of an independent variable?

Age

Temperature

Height

Test scores (correct)

What is the purpose of estimating the extent to which an independent variable change can explain or predict changes in the dependent variable?

To establish a cause-and-effect relationship Signup and view all the answers

How many main types of independent variables are there?

Two Signup and view all the answers

Which of the following is an example of an independent variable?

Temperature Signup and view all the answers

What is the definition of an independent variable?

A variable that is not influenced by any other variables in the study Signup and view all the answers

Which term is used in statistics to estimate the extent to which an independent variable change can explain or predict changes in the dependent variable?

Regression coefficient Signup and view all the answers

How many main types of independent variables are there?

Two Signup and view all the answers

Which of the following best defines an independent variable?

A variable that is manipulated or varied in an experimental study Signup and view all the answers

Study Notes

Independent Variables

An independent variable is a variable that is intentionally changed or manipulated by the researcher to observe its effect on the dependent variable.
Independent variables are also called predictor variables or explanatory variables.
A variable that is not intentionally changed or manipulated by the researcher, but rather is a characteristic of the participants, is NOT an example of an independent variable.

Purpose of Independent Variables

The purpose of estimating the extent to which an independent variable change can explain or predict changes in the dependent variable is to establish cause-and-effect relationships.

Types of Independent Variables

There are two main types of independent variables: • Manipulated independent variables: intentionally changed by the researcher • Non-manipulated independent variables: characteristics of participants, not changed by the researcher

Coefficient of Determination

The coefficient of determination (R²) is the term used in statistics to estimate the extent to which an independent variable change can explain or predict changes in the dependent variable.