52.) Correlation matrix

Correlation matrix:

A Correlation matrix describes correlation among M variables. It is a square symmetrical matrix with the element equal to the correlation coefficient between variables. The diagonal elements (correlations of variables with themselves) are always equal to 1.00. Shown above is a calculated protein correlation matrix for phage T7. Correlated behavior ranges from high(red) to low(blue), and the triangular block of red reflects proteins involved in phage assembly, a highly coordinated process.

http://yin.che.wisc.edu/images/ProteinMatrix.jpg