How is the 'mean' calculated for a data set?
- By arranging the values in ascending order
- By finding the middle value
- By finding the most frequent value
- By summing all values and dividing by the number of values
The mean of a data set is calculated by summing all the values and then dividing by the number of values. It gives the 'average' of the data and can be used for both discrete and continuous data sets. However, it can be heavily influenced by outliers or extreme values.
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