It's worse than unbiased -- it's useless. It can't differentiate between two presidents where one takes the unemployment rate from 4% to 10% at the same rate a president takes it from 10% to 4%; even though the former would be horrible while the latter would be great. Even worse.... take two presidents.... President A inherits an unemployment rate at a healthy 4.0%. The rate increases every month at 0.2 points... after 4 years, the unemployment rate is up to 13.6% and he would get kicked out of office. President B inherits an obscene rate at 23.0%. The rate decreases every month at 0.2 points... after 8 years, the unemployment rate is under 4% (where president A started) and the 22nd Amendment is repealed for such a jobs god. Then along comes a moron like you who idiotically claims president A performed better regarding unemployment because his average of 8.9% is far lower than president B's 13.2% average. That it doesn't matter how one president destroyed the job market while the other saved it -- all that matters is that president A's average unemployment rate was lower.