The data on the figure show that indices of respiratory rate minimum and maximum values at rest have
the trend to quantitative decrease with the age increase. Their dispersion percent index is reduced as well: for
example, minimum (13) and maximum (35) values of respiratory rate at rest in the 8-year-old children differ
from each other by 169.2%. By 20 years of age the aforementioned data dispersion makes only 150% (8 an