[MATLAB基础] 求t分布自由度的结果我看不懂= =求指导

[章小鱼大战金融计算器]

命令如下：
>>x=[1499.82,1511.93,1510.58,1521.44,1576.26,1486.02,1476.74,1421.98,1367.16,1348.30,1397.23,1497.04,1590.73,1675.07,1741.62,1595.59,1555.91,1399.16,1386.20,1342.06,1396.70,1320.54,1340.77,1266.50,1191.82,1306.00,1181.24,1159.15,1060.74,1080.94,1083.03,1162.80,1155.61,1092.82,1099.26,1161.10,1258.10,1299.00,1298.30,1440.20,1641.30,1672.20,1612.70,1658.60,1752.40,1838.00,2099.30,2675.50,2786.30,2881.10,3184.00,3841.30,4109.70,3820.70,4471.00,5218.80,5552.30,5954.80,4871.80,5261.60,4383.40,4348.54,3472.71,3693.11,3433.35,2736.10,2775.72,2397.37,2293.78,1728.79,1871.16,1820.81,1990.66,2082.85,2373.21,2477.57,2632.93,2959.36,3412.06,2667.75,2779.43,2995.85,3195.30,3277.14,2989.29,3051.94,3109.11,2870.61,2592.15,2398.37,2637.50,2638.80,2655.66,2978.84,2820.18,2808.08,2790.69,2905.05,2928.11,2911.51,2743.47,2762.08,2701.73,2567.34,2359.22,2468.25,2333.41,2199.42];
>> [nhat]=mle('t',x,0.05)
输出结果如下：
nhat =

1.0e+003 *

2.2433 0.9174 0.0072
为什么出来三个值？哪个是呢？还有 1.0e+003 *是什么呢？

[章小鱼大战金融计算器]

求高手指导 不胜感激