Randomization Is the Preferred Method for Controlling Extraneous Variables

question 57

True/False

Randomization is the preferred method for controlling extraneous variables.

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Definitions:

Significant

In statistics, it refers to results that are unlikely to have occurred by chance alone, according to a predefined threshold of probability (the significance level).

Marginal Means

The means of subsets of data, taking into account the influence of one or more other variables.

Main Effect

The direct impact of an independent variable on a dependent variable in an experiment or study.

Significant

Indicating that the observed findings in data are unlikely to have occurred by chance, according to a predetermined threshold.