How can I remove outliers of a large matrix where an outlier is defined as a point more than three standard deviations from the mean of each column of the matrix.
I have this code but it works for a single vector, my data is in a matrix form
threshold = 3 * std( BQ);
validRange = mean(BQ) + [-1 1] * threshold;
dataWithoutOutliers = BQ(( data >= validRange(1) & data <= validRange(2) );