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                    - Calculating the Mean
 - Calculating the Median
 - Calculating the Mode
 - From Central Tendency to Variability
 
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                    This chapter is from the book 
                    
                    
                
            From Central Tendency to Variability
This chapter has examined the three principal measures of central tendency in a set of values. Central tendency is a critically important attribute in any sample or population, but so is variability. If the mean informs you where the values tend to cluster, the standard deviation and related statistics tell you how the values tend to disperse. You need to know both, and Chapter 3, “Variability: How Values Disperse,” gets you started on variability.
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