Suppose the estimated duration of a task is 3 months, and the variance of the estimate is 1 month.
假设估算的任务持续时间是 3 个月，并且估计的方差是 1 个月。
2
CHICAGO - a study in South Korea suggests about 1 in 38 children have traits of autism, higher than a previous U.S. estimate of 1 in 100.
芝加哥——韩国的一项研究发现38分之1的孩子有自闭倾向，高于之前美国所估计的100分之1。
3
But the researchers say they still were able to use the findings to estimate that about 2.6 percent of the population had some autism traits - compared to the U.S. estimate of 1 percent.