Mean (Average)
The arithmetic average of a data set.
Variables
- xᵢ
- Data values
- n
- Number of values
Explanation
Add all values and divide by the count. The mean is sensitive to outliers; the median is more robust.
Example
Mean of 2, 4, 9 is .
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Descriptive statistics: mean, median, mode, range, variance, standard deviation and quartiles with steps.