13. In this case, because the systematic and idiosyncratic components of the TEV are uncorrelated, the CTEV can be computed easily. Specifically, the CTEV from the systematic risk is computed as 11.2²/15.1 = 8.3 and from the idiosyncratic as 10.1²/15.1 = 6.8. Note that by definition they sum up to the total TEV. In Chapter 47 a more detailed and general discussion is provided.