Log-likelihood score calculated for a microarray dataset. The log-likelihood score (LLS) compared to the significant correlation coefficients for the Arbeitman et al.  microarray dataset. Statistically significant correlation coefficients are rank ordered and separated into bins of 1,000 gene pairs. For example, the right-most black dot represents the top 1,000 ranked gene pairs by correlation coefficient. The black dots are positively correlated gene pairs, while the red circles are the absolute value of the negatively correlated expression profiles. The blue line is the polynomial model fit to the data and used to transform all correlation coefficients to LLSs.