求翻译：由表1可知，样本期间个股平均超额收益率为-1.73，市场平均超额收益率为-1.60。其中X的偏度和Y的偏度是小于零的，轻度左偏。二者的峰值都小于3，属于偏低峰值。偏度和峰度显示 和 都不是正态分布。是什么意思？

Seen from Table 1, the sample period stocks average excess return was -1.73, the market average excess return rate of -1.60. Skewness skewness of the x and y is less than zero, mild left-skewed. The peak of the two is less than 3, a low peak. Skewness and kurtosis and are not a normal distribution.

From Table 1, the sample can be seen during a unit on average - over-rate, and the market on average 1.73 to -1.60 excess return. One of the deflection and X Y the deflection is less than zero, a mild left. The peak 2 is less than 3, a low peak. Deflection and peak is shown and are not normally dist

May know by Table 1, the sample period stock average exceeds the quota the returns ratio for - 1.73, the market exceeds the quota equally the returns ratio for - 1.60.The in which X skewness and the Y skewness is smaller than the zero, mild left.The two peak value all is smaller than 3, belongs to t

Table 1 indicate that average excess return rate for sampled during the stock-1.73, average excess return rate for market-1.6. Skewness of skewness of x and y is less than zero, a mild left. Both peaks are less than 3, belonging to the low peak. Skewness and kurtosis are displayed and are not normal