79,84,84,86,84,87,93
After removing the highest score of 93 and the lowest score of 79,
The rest of the data are arranged in order of size as 84, 84, 84, 86 and 87.
The median is 84.
Just so-so. x=84+84+86+84+875=85。
Variance S2 = 15 [(84? 85)2+(84? 85)2+(86? 85)2+(84? 85)2+(87? 85)2]= 1.6
So the answer is: 84? 1.6