Also, we need to know how much individual stocks are correlated with rm; we measure that by the regression coefficient.

我们必须清楚,有多少个股与市场总体收益率相关;,我们用回归系数，即β系数来表示。

耶鲁公开课 - 金融市场课程节选

Relative to the whole market, It's well known that over periods of multiple decades the market has a tendency to go up.

是和整个市场相关的对吗，我们都知道经过几十年的时间周期,市场会有上涨的倾向。

麻省理工公开课 - 计算机科学及编程导论课程节选

of a stock is how much it reacts to movements in the market portfolio.

一只股票风险指标β系数直接反应出，The，β,市场组合变动与投资收益的相关性。

耶鲁公开课 - 金融市场课程节选