The standard deviation of average birth weight of piglets in a bigger litter increases . ( table 2 ) 窝仔数越多，平均出生重的标准差越大。
2.
Measure of the amount of fluctuation in price of the underlying security calculated using the standard deviation of average daily price change 对基础证券价格波动程度的测量，利用每日价格变化的标准偏差来计算。
