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Statistical Analysis: Microsoft® Excel® 2013 by Conrad Carlberg

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3. Variability: How Values Disperse

Chapter 2, “How Values Cluster Together,” went into some detail about measures of central tendency: the methods you can use to determine where on a scale of values you can find the value that’s the most typical and representative of a group. Intuitively, an average value is often the most interesting statistic, certainly more interesting than a number that tells you how values fail to come together. But understanding their variation gives context to the central tendency of the values.

For example, people tend to be more ...

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