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15 cards from this deck
A statistic indicating position of features (e.g., centre, peak) in data
Measure of location
Sum of
Centre of a data set
xห=โxn\bar{x} = \frac{\sum x}{n}xห=nโxโ
x-bar
n+12\frac{n+1}{2}2n+1โ
Uses all data
Uses only a single data point
When data has no extreme outliers
Ignores extreme outliers
Median of the lower list
Median of the upper list
IQR=UQโLQ\text{IQR} = UQ - LQIQR=UQโLQ
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