The sets would have different sizes and standard deviations. Examples will vary. A general method for constructing
4(a+4)−2=34
Simplify:
4(a+4)−2=34
(4)(a)+(4)(4)+−2=34(Distribute)
4a+16+−2=34
(4a)+(16+−2)=34(Combine Like Terms)
4a+14=34
Subtract 14 from both sides.
4a+14−14=34−14
4a=20
Divide both sides by 4.
4a/4=20/4
a=5
Hence, the index form of 
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So you divide by 2 because there is 2 buildings. You get 760. Now, just take 200 away from one building, and 200 away from the other, and you get 560 for Building A, and 960 from Building B.
