Databases are hard to find but here are a couple pages with useful statistics:
http://www.prozonesports.com/news-article-analysis-penalty-shootouts---a-lottery-or-a-scienceij.html
http://calpoly.edu/~aamendes/GTweb/soccer.pdf
Yes. The only times other players aren't permitted in the penalty box are on the goalkeeper's goal kicks and on penalty kicks.
The D keeps players 10 yards from the Ball when a penalty kick is taken. Whenever a free kick is taken, the defending team must always be 10 yards away from the ball. This includes penalty kicks. The penalty spot is 12 yards from the goal line. The penalty area is 18 yards from the goal line. All players have to be outside of the box when the penalty kick is taken. Without the D, the players standing behind the penalty taker would only be 6 yards from the ball. So, from the penalty spot, a 10 yard radius is drawn and marked only outside the penalty box (so it ends up looking like a D)
At certain times during the game, such as the kickoff, penalty kicks, goal kicks, corner kicks, and free kicks, the referee must ensure that all opposing players are at least 10 yards away from the ball. In the case of penalty kicks and goal kicks, the referee must ensure that all opposing players are also outside of the penalty area where the kick is being taken. It is also important to note that the referee must ensure a 2 yard distance from the thrower on a throw-in.
The goal kick is retaken.
if the kicker kicks the ball out of bounds without the opposing team touching the ball, the ball is placed on the 40 yard line as a penalty to the kicking team.
It all depends on how you connect with the ball. Curling usually involves concentrating on hitting one side of the ball to make it move in the air; after that it is all practice!
A penalty kick is the method of restarting play when a defender commits a direct free kick offense within their own penalty area. There are 10 direct free kick offenses listed in the Laws of the Game. Play is stopped. The goalkeeper must be on the goal line, between the posts, and facing forward until the kick is taken. All non-kicking players must be outside of the penalty area, outside of the penalty arc, and behind the ball until the kick is taken. The ball is placed on the penalty mark. The whistle is blown. The kicking player may stutter step, but not stop, and must kick the ball once the plant foot is down. The kicking player may not touch the ball a second time until another player has touched it.
It all depends on the referee on the day. One thing for certain is, the penalty must be retaken, and the player who took the penalty may get a yellow card. It is however very unlikely a player will take a penalty before the whistle. It is more common in free kicks. If a free kick is taken before the whistle is blown the free kick must be retaken and again the player may get a yellow card. You will notice before a free kick or penalty the referee will hold up his whistle and show it to the players and say wait for my whistle.
No it is called fudging as it may make the keeper dive early making it an easy goal. Players who do this might get a yellow card and they have to take the penalty again. It happened it the African Nations Cup 2008
Once you have taken the penalty and hit the new ball, you may not hit the old ball again. Play on with the penalty and the new ball.
it depends how hard he kicks it.
During the taking of a penalty kick, the kicker may not touch the ball a second time until it has touched another player.The goal post or crossbar is not another player.The goal keeper is another player.