Summation of
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Chat with our AI personalities
In statistics, Xi represents an individual data point or observation within a dataset. It is commonly used to denote the ith data point in a sequence of data. The subscript i is used to differentiate between different data points in the dataset, with i typically ranging from 1 to n, where n is the total number of data points. Xi is a fundamental concept in statistical analysis and is essential for calculating various statistical measures and conducting data analysis.
Eleven
In statistics, this is the symbol for the "Variance"
It's the same as a z-Transformation. for all xi: (xi-mean(x)) / std(x)
They are statistics of central tendency.