An easy way (you must put the numbers in the correct side)
3 2 you cant subtract 5 from 2 so u carry one
-1 5 the 3
2 ¹3. it should look like this.Now u do 13-5=8
-1 5
2 ¹3. now u do 2-1=1
- 1 5
= 1 8
your final answer is 18.
Sx is the standard deviation of the x values and sy is the standard deviation of the y values. If you can use a calculator put the values in list one and list two then do 1 variable stats on list 1 then again on list 2
It is equivalent to 4-(-7) = 4+7 = 11
