standard error of sample mean

例句：

1. 1. The standard error of the sample mean is calculated to determine the precision of the measurement.
   计算样本均值的标准误差是为了确定测量的精确度。
2. 2. The standard error of the sample mean is used in statistical analysis to account for variability in the data.
   样本均值的标准误差在统计分析中用于考虑数据的变异性。
3. 3. The standard error of the sample mean is often used as a measure of how accurate the sample is in representing the population.
   样本均值的标准误差通常作为衡量样本是否能够代表总体准确性的指标。