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A Combination of Visual Inspection and Statistical Testing Should Always

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A combination of visual inspection and statistical testing should always be used to determine normality.


Definitions:

Measures of Dispersion

Statistical tools that describe the spread or variability of a dataset, including the range, variance, and standard deviation.

Mean

The average for a set of scores.

Mode

The value that occurs most frequently in a dataset, representing the "most common" finding or outcome.

Range Values

The difference between the highest and the lowest values in a set of data points, showing the spread or dispersion of the data.

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