Central Tendency and its Measures
A central tendency is a central or typical value for a probability distribution. It is a summary statistic. The following are most general measures of central tendency:
The mean is basically the average of all the elements of the dataset.
The mean is easily affected by outliers.
Median is the middle element of a sorted dataset. If the dataset has an even number of elements, then the average of two middle elements is the median. The Median is more resistant to outliers.
The most frequent entry in the dataset is the mode. This is the only central tendency measure that can be used in the case of nominal and qualitative data.
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