How do I set up analog stick sensitivity? (just confirming)

I checked a lot of tutorials and all the ones I could find regarding analog movement talk about a virtual analog stick for tablets and such. I'm trying to set up analog movement based on how far you move an Xbox 360 pad's left stick.

Could someone tell me if there's a more efficient way of doing it than in this picture? That's working for me so far, but maybe I'm overlooking an easier way.

Thanks in advance!