One of the first steps in the statistical analysis process is to summarize and describe the data set, in the most simple and meaningful way. Specifically, graph models and descriptive statistics enhance the understanding and interpretation of the distribution of values in the data set. Measures of central tendency identify a single numerical value that is most “typical” or representative of the larger data set. The three most common measures of central tendency are mean (the average score), median (the middle score), and mode (most frequent score). Mode is the simplest, and least used, measure of central tendency. It is defined as the value of a measured variable that occurs most frequently, and typically it corresponds with the highest point (or peak) in ...

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