This method is used in analyzing correlation between data pairs of more than two channels. So, in the case of 4-channel data, the number of data pairs subject to correlation analysis is all 16. The result is provided as 3-D graph.Select data you want to apply this method in Analysis Window and click the icon of All-Pair-Cross Pearson’s Correlation in Analysis Tool Bar. This will display the following result. Two axes in this graph represent channels, while the height axis shows correlation value. The highest value in this graph is 1, which is resulted when correlation of the same channel is calculated. 3-D graph of All-Pair-Cross Pearson’s Correlation is very useful because it clearly shows the degree of correlation between data of channels.