The answer to your question is
No
Wouldn’t it be (-2+12)/2 which is 10/2 which is 5. Because that’s how the midpoint formula works you find starting point and end point, you add those two up together and then divide by 2. So the answer for this one is 5.
(i have to make this 20 characters long)
80% of 25 is 20
The central 50 percent of data around average
7.3 is your answer my guy