Error Practice Data

This data set comes as a supplementary resource for my book on Biostatistics and SPSS. Readers are free to download this file and practice using SPSS as they go along reading the book.本数据集作为本人所著《生物统计学（Biostatistics）与SPSS》一书的配套辅助资源。读者可免费下载该文件，在阅读本书的过程中练习使用SPSS。