coefficient of mean deviation

例句：

1. 1. The coefficient of mean deviation is used to measure the accuracy of a statistical analysis.
   平均偏差系数用于衡量统计分析的准确性。
2. 2.The standard deviation coefficient is calculated using the formula: SD = σ / N, where σ is the standard deviation and N is the number of observations.
   标准偏差系数的计算公式为：SD = σ / N，其中σ是标准偏差，N是观察值的数量。
3. 3. The coefficient of mean deviation is also known as the coefficient of variation, which measures howmuch a variable deviates from its mean value.
   平均偏差系数也被称为变异系数，它衡量一个变量偏离其平均值的程度。