[ noun ] (mathematics,statistics) the expected value of the square of the deviations of a random variable from the point of origin
Used in print(James A. Ibers et al., "Proton magnetic resonance...)
The general theory of resonance shifts is used to derive a general expression for the second_moment **f of a polycrystalline paramagnetic sample and is specialized to **f .
The experimental second_moment **f conforms_to the relation **f in_agreement with theory .
Second_moments of the spectra were computed by numerical integration .