Using simple linear regression,we study thg ability of funds in choosing the proper time in the security market in ckecking the short period ability of profit of the securities invesfment funds.

• 在对证券投资基金短期赢利能力的考查时,采用简单线性回归,二次回归及虚拟变量回归等数量分析的方法,进行基金在证券市场上时机选择能力方面的研究。