# How to "Un-Normalise Data"

Hello how would I get the value back after I normalise the data ?

Currently I am taking my list of numbers and doing $\frac{\text{Val} - \text{Min}}{\text{Max} - \text{Min}}$ on each of the numbers. With gives me a number from $1$ to $0$; But how would i revert this back to the original. I have tried $(\text{Val} + \text{Min}) \cdot (\text{Max} + \text{Min})$ this is probably really simple but I have become unstuck en and it kind of annoying me now.

• val*(max-min)+min May 9 '18 at 0:54

Multiply each number in your list by $(\max-\min)$ and then add min to it. :)
• \begin{align} & \max\text{-}\min \\ & \max - \min \end{align} $+1. \quad$ However, your minus sign looked like a hyphen (as in the first line above) rather than like a minus sign, so I edited your answer to correct that. $\qquad$ May 9 '18 at 3:12