Jan 13
Chronograph Bias: True SD is Probably Higher
Standard Deviation Corrector Corrects bias in sample SD displayed by a chronograph.(Valid for all Normally distributed variables, like muzzle velocity.) Shots (n): Reported SD: Calculate Corrected SD Copy Result If you spend time on shooting forums or Instagram, you’ve seen the photos: A chronograph screen proudly displaying a Standard Deviation (SD) of muzzle velocity under 5 fps. A caption…