Summary Method Select a method for summarizing the probeset . Methods are described below: Method Description None Probe -level data is produced as the output data set. Mean The mean of intensities within a probeset is taken. Median The median of intensities within a probeset is taken. Medianpolish The median polish method is applied. This is the summary method in the RMA algorithm 1 . 1 Irizarry, R. A., Hobbs, B., Collin, F., Beazer-Barclay, Y. D., Antonellis, K. J., Scherf, U., Speed, T. P. (2003). Exploration, normalization, and summaries of high density oligonucleotide array probe level data. Biostatistics 4:249-264. To Specify a Summary Method: Click the radio button corresponding to the desired method.