[Isura]

I never took stats but intuitively I'd say that they go 1,2,3,4 from lowest to highest variance. Also, 2 and 3 have the same variance. My reasoning is that you can calculate the variance of each individual event and then sum using their likelyhood. So 1 has 0 variance. 2 and 3 are same since the case of 25% equity vs 75% equity are the same since you sway the same amount from the average (ie 75 or 0, 25 or 100).