American researchers used a national long-term survey of adolescent health to investigate the link between media use and depression.

VOA: special.2009.03.10

I didn't use the normal approximation there-- that's obvious--I used the binomial itself.

我显然并没有用到正态分布,我用了二项分布

耶鲁公开课 - 金融市场课程节选

I didn't use the normal approximation there-- that's obvious--I used the binomial itself.

我显然并没有用到正态分布,我用了二项分布

耶鲁公开课 - 金融市场课程节选