In a Formal Experiment,the Researcher Manipulates One Variable to See

question 55

Multiple Choice

In a formal experiment,the researcher manipulates one variable to see how it affects another variable.The variable that is manipulated is called the:

• A) control variable.
• B) experimental variable.
• C) dependent variable.
• D) independent variable.

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Definitions:

Chi-square Statistics

A statistical measure used to analyze the differences between categorical variables in a contingency table.

Degrees of Freedom

The amount of separate values or quantities that can be attributed to a statistical distribution.

P Value

A statistical measure that helps determine the significance of results, indicating the probability of observing the results if the null hypothesis is true.

Null Hypothesis

An initial hypothesis that assumes no association or difference between groups or variables, tested against an alternative hypothesis.