kirby007 said: The thing is if i work woth + and - +20% +20% -20% sum becomes 20% off Yes there might be ways to avoid that but this is sinplistic |
It might be simplistic but its 100% wrong
+20% +20% -20% = 20% off, 20% off, 20% off = average of 20% error
To easily prove what you're saying is nonsense think of
sales ps4 1000 switch 1000 xb1 1000
person 1 guessed 500, 2000, 500
person 2 guessed 1000,1001,1000
you're claiming person 1 is more accurate than person 2