需要处理问卷数据,未回答的问题改9,而对未完成的问卷,从最后一题到第一个放弃的
问题,改成不存在.。
For example,
12345 54332
recoded into
12345954332;
whereas
123
recoded inot
123........
The problem is individuals gave up the survey at different points. How to im
plement the recoding?
Hope I made it clear. 感谢各位!