Essentially the CV(RMSD) replaces the standard deviation term with the Root Mean Square Deviation (RMSD). Fisher stated that deviations exceeding twice the standard deviation are regarded as significant. This has to be further divided by the standard deviation to get unit variance. The score is normalized by the standard deviation of these differences. "s" is a scale parameter proportional to the standard deviation. Each standard deviation represents a fixed percentile. The measurement had a standard deviation of 0.748 ms. It also partially corrects the bias in the estimation of the population standard deviation. Declination is positive for an eastward deviation of the field relative to true north. The pathophysiology depends on the specific cause of right axis deviation. The congenital condition of dextrocardia results in right axis deviation. The product of the standard deviation in time and frequency is limited. Then, any single value has an uncertainty equal to the standard deviation. See unbiased estimation of standard deviation for further discussion. We can obtain this by determining the standard deviation of the sampled mean.