what is the matrix for yty and xty? how to find var/cov formula which of the following is a problem with the generalised logistic regression gls var-cov matrix of b given summary statistics? what is the matrix var/cov of b for gls what is the var_cov matrix what type of matrix would represent the gls how do you construct a matrix of b given summary statistic what is the equation of the var matrix? what is var cov matrix of gls for what is the var/cov matrix for a lis test? gls var/cov matrix gls var/cov matrix b gls var and covar matrix what is the matrix of the y bar gls var/cov matrix what is the matrix of yty called what is the value for yty in the matrix tss and cov gls matrix of b what is the formula from the gls matrix that is used to calculate an estimate gls matrix