<t>Hi, I need some help here on VBA codes below. I wrote a code to calculate covariance based on reducing weights:Function NCovar(bond1, bond2)Dim avret1, avret2, wgtDim covar1, covarDim noRow1, noRow2, noRow As IntegerDim z, i, rcount, y As IntegerDim bond1vec, bond2vec As Variantavret1 = Applicati...