ToTo 奇妙の冒險

I construct a new category to put some articles of my statistical consulting experiences. It's not only a memory, but also a record that I can retrospect some special cases or problems if I encounter some similar situations in the future. I'll write these articles in my office and type in English. It doesn't mean I am show off my English ability because there is no Chinese input software in the computer in my office. Don't feel picky in my grammar and spelling. I recognize my English is poor. Well, if there is any suggestion from someone, welcome to leave your message in relative articles.