没人吗？这篇文章好难写，跪求版主现身

jackabigail

Although forecasts of presidential elections based on opinion polls measure current voter preference, many voters keep changing their minds about whom they prefer until the last few days before the balloting. Some do not even make a final decision until they enter the voting booth. Forecasts based on opinion polls are therefore little better at predicting election outcomes than a random guess would be


我没法找到3个以上的攻击点

1p1p1p2p

1.是不是真的有许多人摇摆不定 从哪得出的结论？
2.即使有很多人摇摆不定   占比例多少？影响预测么？
3.如果比例很小 民意调查还是能很好的预测
4.毫无根据说根据民意调查的预测不如随机猜测

jackabigail

1p1p1p2p 发表于 2013-7-20 06:39
1.是不是真的有许多人摇摆不定 从哪得出的结论？
2.即使有很多人摇摆不定   占比例多少？影响预测么？
3.如 ...

谢谢！！！！！！！