一個英文問題, 請求幫忙~~

得出來的數據唔準確, 可能存在偏差
Results in the data is inaccurate, possibility of a difference.

inaccurate=不正確,唔準確.
devaition=越軌;偏向, 誤差;偏航. But I think I use difference, it may be better!
I hope this help!

得出來的數據唔準確, 可能存在偏差。
The statistic generated is not precise, discrepancy may exist.

2008-08-11 09:59:17 補充：
precise - 精確的;準確的;確切的 (when we refer 統計數值, precise is a better adjective)
discrepancy - 不一致,不符,差異

The outcome of the data is not accurate and may have deviation .