=+5.31 ● The paper “Increased Vital and Total Lung Capacities in Tibetan Compared to Han Residents of Lhasa”

(American Journal of Physical Anthropology [1991]:

341–351) included a scatterplot of vital capacity (y)

versus chest circumference (x) for a sample of 16 Tibetan natives, from which the following data were read:
x 79.4 81.8 81.8 82.3 83.7 84.3 84.3 85.2 y 4.3 4.6 4.8 4.7 5.0 4.9 4.4 5.0 x 87.0 87.3 87.7 88.1 88.1 88.6 89.0 89.5 y 6.1 4.7 5.7 5.7 5.2 5.5 5.0 5.3