中文说明：统计中经常会遇到求置信区间、置信区域（如置信椭圆、置信椭球）等，有时候需要把置信区域画出来，这样看起看更为直观，下面结合具体案例介绍调用自编函数ConfidenceRegion绘制置信区域。
English Description：
Statistics will always be seeking confidence intervals, confidence regions (such as confidence ellipses, confidence ellipsoid), sometimes need to draw confidence regions, so look see more intuitive, self function is called ConfidenceRegion with specific cases described below draw confidence regions.