One Way to Randomly Assign Students to Experimental and Control

question 482

Multiple Choice

One way to randomly assign students to experimental and control groups for a study of academic behaviors is to

• A)flip a coin for each student to determine which group she or he will be assigned.
• B)divide the group sitting in the front half of the room from the group sitting in the back.
• C)ask volunteers for the experimental group to raise their hands.
• D)do none of these.

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Definitions:

Degrees of Freedom

The amount of separate parameters or data points that can be attributed to a statistical distribution.

Mean Squares

A statistic used in variance analysis that represents the average of squared deviations, often used in the context of ANOVA.

F Test Statistic

Used in analysis of variance (ANOVA) to compare the variances of two populations, based on sample data.

F-Test

A statistical test used to compare the variances of two populations and determine if they are significantly different.