我的数据都是1以下的值,有正有负,但是使用xtsum得到的统计量都是几万几万的,是什么个情况啊
Variable Mean Std. Dev. Min Max Observations
i overall 21697.58 12537.32 1 43441 N = 43544
between 5753.412 7955.902 36835.25 n = 838
within 11139.74 -14090.53 56081.93 T-bar = 51.9618
y overall 21250.35 12769.19 1 43385 N = 44296
between 9887.577 4552.635 41820.02 n = 838
within 8001.366 -16537.04 59386.71 T-bar = 52.8592
c overall 22287.31 12984.22 1 44819 N = 45115
between 10461.79 2527.094 44472.56 n = 838
within 7764.4 -10611.09 61151.64 T-bar = 53.8365
b overall 14964.11 11669.64 1 36098 N = 43544
between 6943.218 4 31618.35 n = 838
within 9383.601 -15699.27 50084.49 T-bar = 51.9618