Descriptive Statistics

Range, central tendency, standard deviation, variance, correlation

Descriptive statistics quantitatively describe features of a sample of data, such as the basic mean or standard deviation. Cumulative methods report a statistic as you move through the elements of an array. Moving methods report a statistic within a local window of array elements, then move to the next window.

Functions

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Basic Statistics

`min`	Minimum elements of an array
`mink`	Find`k`smallest elements of array
`max`	Maximum elements of an array
`maxk`	Find`k`最大的数组元素
`bounds`	Smallest and largest elements
`topkrows`	Top rows in sorted order
`mean`	Average or mean value of array
`median`	Median value of array
`mode`	Most frequent values in array
`std`	Standard deviation
`var`	Variance
`corrcoef`	Correlation coefficients
`cov`	Covariance
`xcorr`	Cross-correlation
`xcov`	Cross-covariance

Cumulative Statistics

`cummax`	Cumulative maximum
`cummin`	Cumulative minimum

Moving Statistics

`movmad`	Moving median absolute deviation
`movmax`	Moving maximum
`movmean`	Moving mean
`movmedian`	Moving median
`movmin`	Moving minimum
`movprod`	Moving product
`movstd`	Moving standard deviation
`movsum`	Moving sum
`movvar`	Moving variance