各位同学，我是SPSS得新学者，在求alpha系数的时候，怎么老是只能看到剔除某一变量的alpha系数，就如下图所示，根本没有显示四个变量之间的系数！！！
    谢谢赐教！！

Item-Total Statistics
  Scale Mean if Item Deleted Scale Variance if Item Deleted Corrected Item-Total Correlation Squared Multiple Correlation Cronbach's Alpha if Item Deleted
V2 10.34 17.551 .771 .644 .883
V3 10.19 16.966 .828 .710 .863
V4 10.15 17.234 .807 .662 .871
V5 10.19 17.471 .744 .580 .894