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Percentiles of a data set
Y = prctile(X,p) returns percentiles of the values in a data vector or matrix X for the percentages p in the interval [0,100].
If X is a vector, then Y is a scalar or a vector with the same length as the number of percentiles required (length(p)). Y(i) contains the p(i) percentile.
If X is a matrix, then Y is a row vector or a matrix, where the number of rows of Y is equal to the number of percentiles required (length(p)). The ith row of Y contains the p(i) percentiles of each column of X.
For multidimensional arrays, prctile operates along the first nonsingleton dimension of X.