Central Tendency It is useful to represent a large data set with single values that describe the average or the middle value of the set. In descriptive statistics, the individual values are called the central tendency and. Mode, mean and median constitute the central tendency. Mean Arithmetic mean of a set of variables; it is the sum of all variables divided by their number contributing to that sum. Mathematically it is expressed as, Equation 1: Mean=XN where X are the observed variable
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