Why is it we always break out the variance portion from the covariance portion? Why isn't it written as:
instead of what we see
)
If you cycle through the first expression you wouldn't double count the variance (or maybe I just am forgetting how this notation works)
instead of what we see
If you cycle through the first expression you wouldn't double count the variance (or maybe I just am forgetting how this notation works)
Summation notation question
0 commentaires:
Enregistrer un commentaire