What is the sum of the mean and median of data-1, 2, 3, 5, 1.
数据-1，2，3，5，1的平均数与中位数之和是多少．
<gadget id="calculator">(-1) + 1 + 2 + 3 + 5</gadget>
<output>10</output>

<gadget id="calculator">10 / 5</gadget>
<output>2</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<result>4</result>