To Examine the Difference Among the Average Scores of Three

question 51

Multiple Choice

To examine the difference among the average scores of three unrelated groups,which of the following statistical techniques should be selected?

• A)regression
• B)dependent-samples t-test
• C)independent-samples t-test
• D)analysis of variance

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Definitions:

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or to determine the distribution's parameter.

Chi-Squared Test Statistic

A value used in chi-squared tests to evaluate how likely observed frequencies of events are to occur under a specific hypothetical distribution.

Expected Value

In probability theory, the sum of all possible outcomes of a particular situation, each multiplied by its likelihood of happening.

Sample Size

Sample size refers to the number of observations or data points collected in a sample from a population for the purpose of statistical analysis.