Question #1: Is there any kind of formula to figure out how far away from the bottom of the sink the spout height should be so that it doesn't splash? My sink is only 6" deep. The spout height I have now is around 5 1/2 inches but the faucets I want are 6 3/4".

Question #2: I have a deckplate with the faucet I have now - does that mean I have to have one with the new faucet?

Question #3: If the description/specifications on a faucet don't mention a deck plate does that mean there isn't one included?

Anyone's help would be appreciated. LynnB