Unplugged bass guitar frequency response - does it matter?

I wonder if anybody has measured their unplugged bass guitar frequency response. I used Audacity freeware to measure my Mexican build Fender Jazz Bass fretless. I had one before and it had a couple of bad dead notes. This one is much better.
I run this frequency analysis to see if any dead notes would show up. In theory dead notes should have a significant dip in loudness. I am not sure if my approach and measurements were right. Anyway, here is a video showing how I did it: