StateProbabilityReturn on Stock AReturn on Stock B10.1010%8%20.2013%7%30.2012%6%40.3014%9%50.2015%8%The coefficient of correlation between A and B is 22/31StateProbabilityReturn on Stock AReturn on Stock B10.1010%8%20.2013%7%30.2012%6%40.3014%9%50.2015%8% The coefficient of correlation between A and B is 1.20.0.46.0.58.0.73.0.60 Giải thíchChọn đáp án B