What Is the Consequence of Violating the Assumption of Sphericity

question 6

Multiple Choice

What is the consequence of violating the assumption of Sphericity?

• A)It increases statistical power, effects the distribution of the F-statistic and raises the rate of Type I errors in post hocs.
• B)It reduces statistical power, effects the distribution of the F-statistic and reduces the rate of Type I errors in post hocs.
• C)It reduces statistical power, effects the distribution of the F-statistic and raises the rate of Type I errors in post hocs.
• D)It reduces statistical power, improves the distribution of the F-statistic and raises the rate of Type I errors in post hocs.

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Definitions:

Measures of Dispersion

Statistical calculations that describe the spread or variability among a set of numerical data.

Measures of Correlation

Statistical techniques used to determine the degree to which two variables are related, indicating how changes in one variable are associated with changes in another.

Variance

A measure of the extent to which a set of scores vary on either side of their mean value. The square root of variance gives the standard deviation.

Descriptive Statistics

Descriptive statistics involve statistical techniques that summarize or describe the main features of a collection of data, including measures like mean, median, and mode.