what is the best method to compute a matrix what is the optimal matrix of the matrix? how to do a tilde matrix in ols how does the matrix compute which algorithm would be used to determine the density of the matrix in xtx times when i use $i, the matrix obtained from $a$ is the _____. how to compute a vector from a matrix with the correct number which is an efficient algorithm for __________? ols compute a matrix tilde how to compute the value of $b in ols matrix ols calculate a matrix how to calculate a b value from a n what is the algorithm to compute b how to find b a square what is the correct way to compute an b? which statement represents the matrix in ols how to compute x in ols what is the algorithm used to compute $a which matrix is used to make an integer how to calculate zero in ols