NO.PZ2020011101000048
问题如下：
How are bootstrap samples generated using the circular block bootstrap (CBB)?
选项：
解释：
The CBB uses samples from the original data in blocks of size m. Each block is chosen by selecting the index for the first observation in the block. A total of [] blocks are selected, where n is the sample size where [] selects the smallest integer larger than its input. If the number of observations selected is larger than m due to rounding, only the first n are kept. If a block starts in the last m - 1 observations, the block wraps around to the start of the sample.
如题，请具体解释一下过程，另外这个CBB和讲义里的moving block bootstrap有啥区别？
最后提个建议，视频中提到不是重点的地方，习题大多与这些点相关，会有一种感觉就是，不是重点但考的比讲的要深入，分不清是否真的为重要的考点。
