As others have noted, all of these things depend on the owner, the property manager, and the area. I work with a company that owns over 90 rentals in the area. We try to rehab them to get the highest possible rent in a given area. Below are the answers to your questions from our perspective.
1. We provide all appliances except washer and dryer. We believe that providing these appliances helps maximize rent, and gets us a higher quality tenant.
2. With the wrong property manager, we had a lot. With the right property manager, just a few. It's really up to you to make sure your tenants are being properly screened. Make sure they can afford the unit, and that they have a clean eviction history before you rent to them and you'll minimize evictions.
3. We usually receive 2-3 (usually minor) calls in the first month they move in. Once we fix those, they tend to drop off, and then we may only get 1 or 2 for the rest of the year.
4. I'd say around 5-7 on average.
5. On average, I'd say $1,500, but it could be as low as $500 if it's just carpet cleaning and paint touch up, or as much as $4,000 if they trash the place.