You should also try to include the margin of error (often called the confidenceinterval) because it indicates the reliability of the evidence.
你还应该设法包括误差限(常常称为置信区间)，因为它指出了证据的可靠性。
2
Not only it is painfully hard to account for all the variables that could possibly impact the project, but also the confidenceinterval itself can be little more than an educated guess.
不仅需要痛苦地努力计算可能影响项目的所有变量，而且可信区间本身与推测之间没有太大差别了。
3
When an estimate is produced, it usually includes a confidenceinterval of some kind regarding its precision.