Chp 3 - Slide 55

[mine-cetinkaya-rundel]

Suggestion from Rivo Randrianarivony via email:

By the way, I understand that the goal is not to overwhelm the student with mathematical notations but then sometimes it's better to make things more precise. For example, on slide 55 of chap. 3., it would be better to add a subscript to the $S$ and $C$ r.v.'s in the variance formula like so: $V(S_1 + ... + S_5 + C_1 + ...)$ so that we can talk about the time spent on the first stat homework for $S_1$, etc..