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== 3.1#h(0.6em)Central Tendency


    #notebox("Note", rgb("#8a94a6"), rgb("#556666"), rgb("#f7f8fa"))[
#emph[Prerequisites]


      none
]


    + What
                                                  is Central Tendency
+ Measures
                                                  of Central Tendency
+ Balance
                                                  Scale Simulation
+ Absolute
                                                  Difference Simulation
+ Squared
                                                  Differences Simulation
+ Mean
                                                  and Median
+ Mean
                                                  and Median Simulation
+ Additional
                                                  Measures
+ Comparing
                                                  measures


    Central tendency is a loosely defined concept that has to do
                with the location of the center of a distribution. The section
                "What is Central Tendency" presents three definitions of the
                center of a distribution. "Measures of Central Tendency" presents
                the three most common measures of the center of the distribution.
                The three simulations that follow relate the definitions of the
                center of a distribution to the commonly used measures of central
                tendency. The findings from these simulations are summarized
                in the section "Mean and Median." The "Mean and Median" allows
                you to explore  how the relative size
                of the mean and the median depends on the skew of the distribution.


    Less frequently used measures of central tendency
                can be valuable supplements to the more commonly used measures.
                Some of these measures are presented in "Additional Measures."
                Finally, the last section compares and summarizes differences
                among measures of central tendency.