Correlation and Standardized Regression In this chapter, you will learn about correlation and its role in regression. To do so, we will use the keith-gpa.csv data to examine whether time
信号检测论在R中计算 信号检测理论导读：测量与计算 https://www.douban.com/note/784162736/ 信号检测理
I have just spent a semester teaching multilevel modeling, and in the R codes I provided, I usually use the pipe operator (%>%). For example, to compute the cluster means, we can do