In an Experiment, Researchers Assign Participants to Either the Experimental

question 19

Multiple Choice

In an experiment, researchers assign participants to either the experimental or control condition by using:

• A) convenience assignment.
• B) convenience sampling.
• C) random sampling.
• D) random assignment.

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Definitions:

Coefficient of Determination

A statistical measure that explains the proportion of the variance for a dependent variable that's explained by an independent variable or variables in a regression model.

Sum of Squares

A statistical measure of the dispersion of observation values, calculated as the sum of the squared differences from the mean.

Regression Coefficient

A value that represents the degree of change of a dependent variable expected from a one-unit change in an independent variable, all else being equal.

Simple Linear Regression

A statistical technique that fits a linear equation to observed data to model the connection between a dependent variable and a single independent variable.