The term effectiveness is used to describe the likelihood that the statistical sample result will be more accurate estimate of the truepopulation error rate.
效果“用来描述统计样本结果能更精确估计真实的总体误差率的可能性。”
2
Perhaps that once was true, but today elderly Americans as a group have a lower poverty rate than the rest of the population.
也许这曾经是对的，但是今天美国老年群体的贫困率比其他人群要低。
3
“In the college population, it may be difficult to sort out recreational drinking from true problem drinking with DSM-IV diagnostic criteria alone,” the researchers said.