取计量版2006年1月19日20:20数据
[此贴子已经被作者于2006-1-20 20:56:43编辑过]
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样本空间为40
第二步:利用散点图确认可使用线性模型
第三步:取人气为解释变量
回复为因变量
进行回归分析
[此贴子已经被作者于2006-1-20 20:37:40编辑过]
SUMMARY OUTPUT
得出回归方程:y=-247.038+0.068368x
Multiple R
0.904042
R Square
0.817292
[此贴子已经被作者于2006-1-20 20:57:39编辑过]
so I think you may add other explanatory variable
your constant may contains risk premium
why,please tell me your concrete reasons
pleased to communicate with u and anyone who likes to study statistics.
maybe someone can chang it better
it is interesting
yes, the constant contains risk premium,maybe the sample is too centralized.
because people have different preference for replying it
some people may like to input water
some people may be so lazy that never reply
hence add risk premium is a good choice
平均每1000个读帖者中只有约436.642个回帖
结论:潜水者众,回帖者少
建议:大家每个人都更加preactive一些,多多参与,促进论坛的发展。
what my suggestion is you may put dummy variable
d=1, valuable reply
d=0 water