Approximate Confidence Intervals for the Mean Direction of a von Mises Distribution
提出了简单公式，用于计算冯·米塞斯分布样本平均方向的准确置信区间，无需估计第二三角矩或使用列线图。
Simple formulae are suggested that provide accurate confidence bounds for the mean direction of a sample from a von Mises distribution. These formulae obviate the need for calculating an estimate of the second trigonometric moment, and dispense with nomograms.