Statistics and analysis are an indispensable thing while playing gambling.
It is really helps to predict and diminuate the pourcentag of failing.
Analysis is really important even in life when you make big decision.. without it you will start losing or failing yourself which in gambling you will lose a lot of money or ended up bankrupt. So it's really important to analyze first before playing the game.
Analysis is indeed important, but we can't apply analysis in all of the games on every gambling site, because there are games which do not required analysis like DICE, all rolls that they are making are all random, so using analysis on it is basically useless, but we could apply the analysis on betting, if we know when to bet high and bet low, then we could avoid losing too much by using analysis.