douglass1980 发表于 2013-5-17 17:23
调查会受bbs主要使用群体的限制。调查范围内的很多人根本不上bbs呢吧,也有很多人不看这个帖子吧。。。。但 ...
No, the sample will not be biased. I am not trying to find out what the demographic is like in real life. I am just looking specifically at the forum users, hence my title "論壇用戶都是什麼樣的人?"
The people who didn't read the post, well, they are not participating in forum discussion regularly enough to be of concern.
I know I should really pick users at random and send them the survey and wait for their reply. But it's just too hard.
And I am glad you like the age groups. |