For example, a lower volatility stock may have an expected (average) return of 7%, with annual volatility of 5%. This would indicate returns from approximately negative 3% to positive 17% most of the time (19 times out of 20, or 95% via a two standard deviation rule).
To join the enlisted ranks, in general you must: 1  Be a U.S. citizen or Green Card holder Non-citizens must speak, read, and write English fluently. Non-citizens must currently live in the U.S. 2  Be in good health. 3  Be 17 to 40 years old (different branches have different age requirements). View a chart of age requirements by service.
Here is a look at some of the basic qualifications to enlist in the military. Across the armed forces, the minimum age allowed for enlistment is 17 (with parental consent) and 18 (without parental consent). The maximum age for enlistment for someone who has never served in the military before varies by branch; for the Army it's 35, for the Navy it's 34, for the Air Force it's 39 and for the Marines it's 28.