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Jun
1
comment Can a decision be both + and - EV?
As it turns out, you can use statistics to estimate expected value.
Jun
1
comment Can a decision be both + and - EV?
While it may not be useful to you, it is most certainly a useful thing: en.wikipedia.org/wiki/Standard_error#Standard_error_of_the_mean
Jun
1
comment Can a decision be both + and - EV?
Of course it will affect your decision making process. For example, you have two choices, with EV intervals of [0.1,0.2] and [-100,101]. The EV estimate of the second is higher than the first, but you might choose to take the more certain action over the higher EV action.
Jun
1
comment Can a decision be both + and - EV?
You are confusing the standard deviation of the outcome with the standard deviation of the EV estimate. Any construction of EV (in poker) can only be an estimate. As such, that estimate has an associated standard error (the standard deviation of the estimate).