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Table 3 Correlation analysis between Frare value and classical codon bias indices

From: Computational identification of rare codons of Escherichia coli based on codon pairs preference

   Frare_value CAI CBI Fop
Frare_value Correlation Coefficient 1.000 -.729** -.640** -.644**
  Sig.(2-tailed) . .000 .000 .000
  N 4289 4289 4289 4289
CAI Correlation Coefficient -.729** 1.000 .905** .933**
  Sig.(2-tailed) .000 . .000 .000
  N 4289 4289 4289 4289
CBI Correlation Coefficient -.640** .905** 1.000 .989**
  Sig.(2-tailed) .000 .000 . .000
  N 4289 4289 4289 4289
Fop Correlation Coefficient -.644** .933** .989** 1.000
  Sig.(2-tailed) .000 .000 .000 .
  N 4289 4289 4289 4289
  1. **. Correlation is significant at the 0.01 level (2-tailed)