I would say that those statistics are kind of flawed. The large majority of the crime in Alaska happens among the natives. They have a huge alcohol problem. The natives also receive monthly payments from the government which a lot of the time go straight to alcohol. In Anchorage there is a liquor store on almost every block.
The other big problem with crime in Alaska is there are 4 men for every woman in Alaska. I think that kind of dynamic naturally results in a higher crime rate.
If you are male than I would say that Alaska is a pretty safe place to live. If you are female than I would still say it is a safe place to live, but that you need to take a lot of additional precautions against getting drunk at a bar or walking down a backstreet by yourself at night.