1)biserial ratio of correlation,双数列相关比2)point biserial correlation coefficient,点双列相关系数3)bi-serial coefficient of correlation,双列相关系数4)bi-series correlation,双列相关5)double equal ratio series,双等比数列6)biserial ratio of correlation,两序列相关比
用法和例句
The definition of double equal ratio series is given in the paper and the general term and formula of former n terms are given.