A prototypical example of self-normalized random variables is Student's t-statistic which replaces the population standard deviation σ in the standardized sample mean n ( X ¯ n − μ ) / σ by the sample standard deviation.
Rates within the age range 25 64 years were age-standardized using the 2000 U.S. population standard.
Age-standardized rates, using the Segi population standard [7], [8] and the WHO population standard [7], were 2.07 and 1.78 per 100,000 persons, respectively (Table 2 ).
Using direct standardization with the entire diabetes cohort as the population standard, we calculated age-adjusted sex- and ethnicity-specific rates for LEA.
The year 2000 population standard was used for age adjustment, with all suicide rates standardized in five-year age categories.
(sigma = yes) Calculate the population standard deviation?
sigma = True Calculate the population standard deviation?
When the population standard deviation, σ, is unknown, the sample standard deviation is used to estimate σ in the confidence interval formula.
z-score of each gene is calculated as conventional z-score formula using mean and population standard deviation of a gene within patients84,85.
Statisticians have shown that the mean of the sampling distribution of x̄ is equal to the population mean, μ, and that the standard deviation is given by σ/Square root of√n, where σ is the population standard deviation.
The recently published INTERGROWTH-21st Project international population standard for newborn size is intended for global use, but its ability to identify small infants at risk of adverse outcomes in a general obstetric population has not been reported.
