# When would it be appropriate to perform a non-linear transformation on your data?

##### 1 Answer

#### Answer:

(1) When your data is obviously non linear.

and/or

(2) When your model is obviously non-linear.

#### Explanation:

There seem to me to be two main reasons to try a non-linear transformation on your data:

(1) The data itself is obviously non-linear. e.g. When plotted on a linear scale, the points follow a non-linear curve.

(2) The data pertains to a non-linear system. e.g. population growth.

If you suspect an exponential relationship like

If you suspect a power relationship like

If you suspect a polynomial relationship like