squared error asymptotically efficient estimator

例句：

1. 1.The model's predictions were within a few percentage points of the actual values.
   模型的预测值与实际值相差不到几个百分比点。
2. 2.The research team used a squared error metric to evaluate the effectiveness of their algorithm.
   研究团队使用平方误差指标来评估他们算法的有效性。
3. 3. The squared error is calculated by taking the square of the difference between two numbers.
   平方误差是通过取两个数差的平方来计算的。