iqr
interquartile range
Syntax
q=iqr(x) q=iqr(x,'r') (or, equivalently, q=iqr(x,1)) q=iqr(x,'c') (or, equivalently, q=iqr(x,2))
Arguments
- x
real or complex vector or matrix
Description
This function computes the interquartile range IQR= upper
quartile - lower quartile of a vector or a matrix x.
For a vector or a matrix x , q=iqr(x)
returns in the scalar q the interquartile range of
all the entries of x.
q=iqr(x,'r') (or, equivalently,
q=iqr(x,1)) is the rowwise interquartile range. It returns in
each entry of the row vector q the interquartile
range of each column of x.
q=iqr(x,'c') (or, equivalently,
q=iqr(x,2)) is the columnwise interquartile range. It returns in
each entry of the column vector q the
interquartile range of each row of x.
Examples
x = 1:10; // Interquartile range of vector 1 to 10 // Q1 = 3 and Q3 = 8, so iqr = 5 iqr(x)
Bibliography
Wonacott, T.H.Wonacott, R.J.; Introductory Statistics, J.Wiley-Sons, 1990.
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