8 students are doing shooting training. The number of shots they make is as follows: 6, 8, 7, 12, 10, 2, 8, 11. What is the average number of this group of data?
8名同学进行投篮训练，他们投中的次数如下：6,8,7,12,10,2,8,11那这组数据的平均数是多少．
<gadget id="calculator">6 + 8 + 7 + 12 + 10 + 2 + 8 + 11</gadget>
<output>64</output>

<gadget id="calculator">64 / 8</gadget>
<output>8</output>

<result>8</result>