Interestingly for anyone who understands statistics one can do a very simple and straightforward statistical test on this data to see the chances that we are less likely to win with Mike Dean refereeing is down to bias or chance.
I have plugged the numbers in and the outcome is remarkable. The number that comes out is 0.06, this basically means the likelihood that this statistic is down to chance is 6%, or 6 in 100.
If one looks at the matches Dean has refereed it is not a skewed sample, this is either down to chance or bias, and the odds are that it is bias. The statistics show that it is 94% likely Dean's bias accounts for our poor record under his decision making.