The standard deviation is lower for each group than it is for the groups combined.
Answer: choice c. GT
===================================
Explanation:
A median is a segment that runs from a vertex point to the midpoint of the opposite side. Segment GT starts at the vertex G and goes to the midpoint T. We know that T is a midpoint since FT and TH are both 3 units long
since FT = TH, we know that FT is half as long as FH; or put another way, FH is twice as long as FT.
---------
Extra info
* Segment HS is an angle bisector: it cuts angle GHF in half.
* If you have two median lines, then you can find the centroid of the triangle.
80 = -1(80), -2(40), -4(20), -5(4),
Total answers include: -81, 79, -42, 16, -9, and 1.
None of them add up to 6!
Are you doing polynomial equations?
If so, you can solve it the hard way.
x^2 + 6x -80 = 0
(x^2 + 6x + 9) - 80 = 9
(x+3)^2 = 89
(x+3) = 9.43
x = 6.43
If you're not doing those then I'm afraid your question has no answer.
Hope that helps!
