[填空题]
Aaron lives in a remote country town in outovj- zk.:j2x(ar6f r hback qq(zc9t)+,c/9reejmsp hwuy)m)r -e Australia. He uses Amazon.com to purchase everyday supplies. Due to his remote location, it can take numerous days for deliveries to arrive. Aaron records the number of days for an order to arrive on his nextewu/q cpyecj-)9r+m mz)h9rt (s,qe) ten orders, with the results as follows.
4,5,3,2,6,11,4,4,6,7
For this data set, find the value of
1. the median;
2. the mean;
3. the standard deviation.
