Laughing Gas (instrumental) this certainly got the crowd roaring. When Rhoads left the band, this song was never again performed. This solo was regularly performed, in different incarnations, with Ozzy on tour. It usually came near the end of "Suicide Solution", although Randy had to cut back the solo to just 2 minutes. One such incarnation of the solo appears on the "Tribute" album. The solo on the live album was from a different show (Montreal) than the rest of the album (Cleveland), and was haphazardly spliced in over the original for unknown reasons. Laughing Gas (instrumental) "Laughing Gas" was a song performed
Algebraic formula for the variance for the "n" by "m" cross-covariance matrix "between" two random vectors of length "n" and "m": where expectations are taken element-wise and formula_8 and formula_9 are random vectors of respective lengths "n" and "m". Note that this formula suffers from the same loss of significance as the formula for variance if used for calculating estimates of the covariance, and alternative algorithms should be used instead. Algebraic formula for the variance In probability theory and statistics, there are several algebraic formulae for the variance available for deriving the variance of a random variable. The usefulness of these depends on what is