<P>PROBLEM TO BE SOLVED: To correctly determine whether or not an anomaly value of data related to a gene is statistically valid. <P>SOLUTION: This application relates to a method for statistically analyzing apparent anomalies in CGH data, wherein the CGH data is arrayed corresponding to locations of substance on chromosomes from which the CGH data was derived. A set of CGH ratio values is considered and Z-score values are computed for each CGH ratio value (106). The Z-score values are classified based upon a predetermined cutoff value (108). The number of Z-scores that are greater than a predetermined cutoff value is counted, the number of Z-scores that are less than a negative of the predetermined cutoff value is counted, and the total number of Z-scores is counted. A subset of the set of CGH ratios is considered, being defined by a window of predetermined size. A secondary Z-score is computed to obtain the significance of at least one of overabundance and underabundance of at least one of significant positive deviations and significant negative deviations in the subset. <P>COPYRIGHT: (C)2006,JPO&NCIPI 
SYSTEM AND METHOD FOR STATISTICALLY ANALYZING APPARENT COMPARATIVE GENOMIC HYBRIDIZATION (CGH) DATA ANOMALY AND PLOTTING THE SAME