Mean

 The sum of all items divided by the number of items.
The mean is calculated by dividing the sum by 'n' where n is the sample size. It is often used in statistics as interchangeable with average.’ 

The advantage to utilizing the mean is that it can be calculated for any set of numerical data, it is always unique, and it takes into account each individual item.

However, interpret the means with caution: a single extreme item can cause the mean to provide a result that is not typical or representative of the data. Consider calculating the weighted mean in addition to the mean to ensure your interpretation of the data is correct. 

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